CN206975007U - Online dissolved oxygen and pH monitor - Google Patents
Online dissolved oxygen and pH monitor Download PDFInfo
- Publication number
- CN206975007U CN206975007U CN201720693042.7U CN201720693042U CN206975007U CN 206975007 U CN206975007 U CN 206975007U CN 201720693042 U CN201720693042 U CN 201720693042U CN 206975007 U CN206975007 U CN 206975007U
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- Prior art keywords
- resistance
- dissolved oxygen
- online dissolved
- amplifying circuit
- input
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 56
- 239000001301 oxygen Substances 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000006870 function Effects 0.000 claims description 5
- 239000004973 liquid crystal related substance Substances 0.000 claims 1
- 238000001139 pH measurement Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 7
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
It the utility model is related to online dissolved oxygen and pH monitor, including dissolved oxygen sensor, the first preamplifier, pH sensors, the second preamplifier, a/d converter, single-chip microcomputer, power module；Dissolved oxygen sensor, the first preamplifier and a/d converter are sequentially connected electrically；PH sensors, the second preamplifier and a/d converter are sequentially connected electrically；A/d converter and monolithic mechatronics；Power module is powered to single-chip microcomputer；Online dissolved oxygen and pH monitor also includes memory cell and GPRS module, memory cell and GPRS module with monolithic mechatronics.The online dissolved oxygen of the utility model and pH monitors can detect the dissolved oxygen content and pH value of water body, and can send short message to default phone number by GPRS module, reminded and alarmed；Preamplifier uses two-stage structure for amplifying, can greatly improve the precision of detection.
Description
Technical field
The utility model belongs to water quality detection instrument technical field, and in particular to a kind of online dissolved oxygen and pH monitors.
Background technology
Traditional detection is to sample chemical method by hand, and not only operating efficiency is low, measuring speed is slow for this method, and by mistake
Poor big (can reach soil 20%), easily causes potential safety hazard.Therefore dissolved oxygen that is quick, accurate, easily detecting in water outlet contains
Measurer has important economic and social benefit.
Domestic conventional dissolved oxygen analytic instrument is mostly foreign-made at present, and its measurement accuracy is high, but selling at exorbitant prices, it is difficult to
It is used widely.And the analyzer precision of domestic independent research is typically relatively low, therefore develop cheap, easy to operate, survey
Accurate dissolved oxygen analytic instrument is tried to have great importance.In addition, current detecting instrument can only all be detected, do not possess report
Alert and prompting function.
Utility model content
In view of this, the purpose of this utility model is overcome the deficiencies in the prior art, there is provided one kind use is simple, can enter
Online dissolved oxygen and the pH monitor of row SMS alarm.
To realize object above, the utility model adopts the following technical scheme that：
Before online dissolved oxygen and pH monitor, including dissolved oxygen sensor, the first preamplifier, pH sensors, second
Put amplifier, a/d converter, single-chip microcomputer, power module；
The dissolved oxygen sensor, the first preamplifier and a/d converter are sequentially connected electrically；The pH sensors, second
Preamplifier and a/d converter are sequentially connected electrically；The a/d converter and the monolithic mechatronics；The power module is given
The single-chip microcomputer power supply；
The online dissolved oxygen and pH monitors also include memory cell and GPRS module, the memory cell and GPRS moulds
Block with the monolithic mechatronics.
The online dissolved oxygen and pH monitors also include the temperature sensor with the monolithic mechatronics.
The online dissolved oxygen and pH monitors also include the current detection circuit with the monolithic mechatronics；The electricity
Current detection circuit electrically connects with the water pump of outside, for detecting the operating current of water pump.
First preamplifier uses two-stage structure for amplifying, including the one-level amplifying circuit and two level that are connected in series to put
Big circuit.
The one-level amplifying circuit includes two switching diodes, high resistance operating amplifier U1, resistance R1, resistance R2, electricity
Hinder R3, resistance R4, electric capacity C1 and electric capacity C2；
Two switching diode reverse parallel connections, one end of the parallel circuit are the input of the one-level amplifying circuit
End, other end ground connection；One end of the resistance R1 connects the input of the one-level amplifying circuit, and the other end connects the high resistant
Operational amplifier U1 inverting input；The positive input end grounding of the high resistance operating amplifier U1, output end connection described in
Resistance R2 one end；One end of the resistance R3 connects the other end of the resistance R2, and the other end of the resistance R3 is described
The output end of one-level amplifying circuit；
The both ends of the electric capacity C1 connect the inverting input and output end of the high resistance operating amplifier U1 respectively；It is described
Electric capacity C2 is in parallel with the resistance R4, and one end of the parallel circuit connects one end of the resistance R1, the parallel circuit it is another
End connects the other end of the resistance R2.
The second amplifying circuit include low consumed power operational amplifier U2 and resistance R5, resistance R6, resistance R7, resistance R8,
Resistance R9 and resistance R10；
One end connection -5V voltage sources of the resistance R5, the other end are connected with one end of the resistance R6；The resistance R7
One end connection+5V voltage sources, the other end is connected with one end of the resistance R6；The other end of the resistance R6 and the low work(
Consume operational amplifier U2 inverting input connection；One end of the resistance R8 is the input of the second amplifying circuit, separately
One end is connected with the inverting input of the low consumed power operational amplifier U2；One end of the resistance R9 and the low-power consumption computing
Amplifier U2 normal phase input end connection, other end ground connection；The both ends of the resistance R10 respectively with the low-power consumption operation amplifier
Device U2 inverting input connects with output end；The output end of the low consumed power operational amplifier U2 is the second amplifying circuit
Output end.
The power module includes battery and power supply adaptor, and external power source gives the storage by the power supply adaptor
Battery charges, and the battery gives other electronics.
The power module includes solar panel, solar recharging manager and the battery being sequentially connected electrically；Institute
Stating solar recharging manager has maximum power tracing function.
The online dissolved oxygen and pH monitors also include display unit and input block, and the display unit and input are single
Member with the monolithic mechatronics；The display unit uses LCDs, and the input block uses button.
The online dissolved oxygen and pH monitors also include the alarm unit with the monolithic mechatronics, and the alarm is single
Member uses buzzer.
The utility model uses above technical scheme, and the dissolved oxygen that online dissolved oxygen and pH monitor can detect water body contains
Amount and pH value, and short message can be sent to default phone number by GPRS module, reminded and alarmed.This practicality is new
The preamplifier of type uses two-stage structure for amplifying, can greatly improve the precision of detection.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the electrical block diagram of the online dissolved oxygen of the utility model and pH monitors；
Fig. 2 is the one-level amplification circuit diagram of the online dissolved oxygen of the utility model and pH monitors；
Fig. 3 is the second amplifying circuit figure of the online dissolved oxygen of the utility model and pH monitors.
In figure：1- dissolved oxygen sensors；The preamplifiers of 2- first；3-pH sensors；The preamplifiers of 4- second；5-AD
Converter；6- single-chip microcomputers；7- power modules；8- memory cell；9-GPRS modules；10- temperature sensors；11- current detectings electricity
Road；12- display units.
Embodiment
, below will be to technology of the present utility model to make the purpose of this utility model, technical scheme and advantage clearer
Scheme is described in detail.Obviously, described embodiment is only the utility model part of the embodiment, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
Resulting all other embodiment is put, belongs to the scope that the utility model is protected.
As shown in figure 1, the utility model provides a kind of online dissolved oxygen and pH monitors, including dissolved oxygen sensor 1, the
One preamplifier 2, pH sensors 3, the second preamplifier 4, a/d converter 5, single-chip microcomputer 6, power module 7；
Dissolved oxygen sensor 1, the first preamplifier 2 and a/d converter 5 are sequentially connected electrically；PH sensors 3, second are preposition
Amplifier 4 and a/d converter 5 are sequentially connected electrically；A/d converter 5 electrically connects with single-chip microcomputer 6；Power module 7 is powered to single-chip microcomputer 6；
Online dissolved oxygen and pH monitor also includes memory cell 8 and GPRS module 9, and memory cell 8 and GPRS module 9 are equal
Electrically connected with single-chip microcomputer 6.
Online dissolved oxygen and pH monitor also includes the temperature sensor 10 electrically connected with single-chip microcomputer 6.
The utility model can not only detect dissolved oxygen content, moreover it is possible to detect the pH value of water body.Can be pre- in single-chip microcomputer 6
If alarm threshold value, when the dissolved oxygen content or pH value detected exceedes alarm threshold value, single-chip microcomputer 6 is by GPRS module 9 to pre-
If phone number send short message, alarmed.
Online dissolved oxygen and pH monitor also includes the current detection circuit 11 electrically connected with single-chip microcomputer 6；Current detecting electricity
Road 11 electrically connects with the water pump of outside, for detecting the operating current of water pump.
Current detection circuit 11 can detect the operating current of water pump, and single-chip microcomputer 6 judges that the working condition of water pump is with this
It is no normal, SMS alarm is carried out when abnormal.
This product can match somebody with somebody two-way and pop one's head in, and test oxygen content in water, pH value content, temperature, monitor pump working state.
Dissolved oxygen test scope (useful range) of the present utility model is：0-20mg/L.The utility model belongs to wired and set
It is standby, the problem of wireless device test scope is small can be improved.
For this patent is described in further detail, carries out expansion and be described as follows：
First preamplifier 2 uses two-stage structure for amplifying, including one-level amplifying circuit and the two level amplification being connected in series
Circuit.
The utility model is using instrument grade dissolved oxygen, pH value preamplifier, regardless of whether power supply, makes all without to probe
Into attenuation.
As shown in Fig. 2 one-level amplifying circuit includes two switching diodes, high resistance operating amplifier U1, resistance R1, resistance
R2, resistance R3, resistance R4, electric capacity C1 and electric capacity C2；
Two switching diode D1 and D2 reverse parallel connections, one end of the parallel circuit are the input of one-level amplifying circuit,
The other end is grounded；The input of resistance R1 one end connection one-level amplifying circuit, other end connection high resistance operating amplifier U1's
Inverting input；High resistance operating amplifier U1 positive input end grounding, output end connection resistance R2 one end；The one of resistance R3
The end connection resistance R2 other end, the resistance R3 other end are the output end of one-level amplifying circuit；
Electric capacity C1 both ends connect high resistance operating amplifier U1 inverting input and output end respectively；Electric capacity C2 and resistance
R4 is in parallel, one end connection resistance R1 of parallel circuit one end, the other end connection resistance R2 of the parallel circuit other end.
Specifically, switching diode D1 and D2 model 1N4148, high resistance operating amplifier U1 model LM272.
As shown in figure 3, second amplifying circuit includes low consumed power operational amplifier U2 and resistance R5, resistance R6, resistance R7, electricity
Hinder R8, resistance R9 and resistance R10；
Resistance R5 one end connection -5V voltage sources, the other end are connected with resistance R6 one end；Resistance R7 one end connection+
5V voltage sources, the other end are connected with resistance R6 one end；The resistance R6 other end is anti-phase defeated with low consumed power operational amplifier U2's
Enter end connection；Resistance R8 one end is the input of second amplifying circuit, and the other end is anti-phase with low consumed power operational amplifier U2's
Input connects；Resistance R9 one end is connected with low consumed power operational amplifier U2 normal phase input end, other end ground connection；Resistance
R10 both ends are connected with low consumed power operational amplifier U2 inverting input and output end respectively；Low consumed power operational amplifier U2
Output end be second amplifying circuit output end.
Specifically, low consumed power operational amplifier U2 model TLC271.
What dissolved oxygen sensor 1 exported is current signal, and current signal is converted into voltage signal simultaneously by one-level amplifying circuit
And be amplified, it is adapted to the requirement of AD conversion.The signal (nA levels) that dissolved oxygen sensor 1 exports first passes around high resistant operation amplifier
Device U1 first order amplification, then reversely amplify by the low consumed power operational amplifier U1 second level.In order to overcome the zero of amplifier
Point drift, negative voltage is added before second amplifying circuit, it is ensured that final output voltage is more than zero.
The current signal size that dissolved oxygen sensor 1 exports is in 0~100nA, the single-chip microcomputer None- identified current signal；Electricity
Signal is flowed after two-stage amplification, and the voltage signal size of output can coverlet in 0.625~2.625V, the voltage signal
Piece machine identifies and processing.
Power module 7 is designed with two schemes：
One, power module 7 includes battery and power supply adaptor, and external power source is filled by power supply adaptor to battery
Electricity, battery give other electronics.
Two, power module 7 includes solar panel, solar recharging manager and the battery being sequentially connected electrically；Too
Positive energy charging manager has maximum power tracing function.
Wherein, solar panel specification：10W18V (maximum power output is 18V cell panel).Such as without using the sun
Can battery, be directly connected to DC18V0.5A (or more than 0.5A) power supply adaptor.
Online dissolved oxygen and pH monitor also includes display unit 12 and input block, and display unit 12 and input block are equal
Electrically connected with single-chip microcomputer 6；Display unit 12 uses LCDs, and input block uses button.
Button uses 1,000,000 long-lived buttons, avoids button bad.
Each button, continuous detection function (recovering the sampling period after 5 minutes) is triggered automatically.
Online dissolved oxygen and pH monitor also includes the alarm unit electrically connected with single-chip microcomputer 6, and alarm unit uses buzzing
Device.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with the power
The protection domain that profit requires is defined.
Claims (10)
1. online dissolved oxygen and pH monitors, it is characterised in that：Including dissolved oxygen sensor, the first preamplifier, pH sensings
Device, the second preamplifier, a/d converter, single-chip microcomputer, power module；
The dissolved oxygen sensor, the first preamplifier and a/d converter are sequentially connected electrically；It is the pH sensors, second preposition
Amplifier and a/d converter are sequentially connected electrically；The a/d converter and the monolithic mechatronics；The power module is to described
Single-chip microcomputer is powered；
The online dissolved oxygen and pH monitors also include memory cell and GPRS module, and the memory cell and GPRS module are equal
With the monolithic mechatronics.
2. online dissolved oxygen according to claim 1 and pH monitors, it is characterised in that：Also include electromechanical with the monolithic
The temperature sensor of connection.
3. online dissolved oxygen according to claim 1 and pH monitors, it is characterised in that：Also include electromechanical with the monolithic
The current detection circuit of connection；The current detection circuit electrically connects with the water pump of outside, for detecting the operating current of water pump.
4. online dissolved oxygen according to claim 1 and pH monitors, it is characterised in that：First preamplifier is adopted
With two-stage structure for amplifying, including the one-level amplifying circuit and second amplifying circuit being connected in series.
5. online dissolved oxygen according to claim 4 and pH monitors, it is characterised in that：The one-level amplifying circuit includes
Two switching diodes, high resistance operating amplifier U1, resistance R1, resistance R2, resistance R3, resistance R4, electric capacity C1 and electric capacity C2；
Two switching diode reverse parallel connections, one end of the parallel circuit are the input of the one-level amplifying circuit, separately
One end is grounded；One end of the resistance R1 connects the input of the one-level amplifying circuit, and the other end connects the high resistant computing
Amplifier U1 inverting input；The positive input end grounding of the high resistance operating amplifier U1, output end connect the resistance
R2 one end；One end of the resistance R3 connects the other end of the resistance R2, and the other end of the resistance R3 is the one-level
The output end of amplifying circuit；
The both ends of the electric capacity C1 connect the inverting input and output end of the high resistance operating amplifier U1 respectively；The electric capacity
C2 is in parallel with the resistance R4, and one end of the parallel circuit connects one end of the resistance R1, and the other end of the parallel circuit connects
Connect the other end of the resistance R2.
6. online dissolved oxygen according to claim 4 and pH monitors, it is characterised in that：The second amplifying circuit includes
Low consumed power operational amplifier U2 and resistance R5, resistance R6, resistance R7, resistance R8, resistance R9 and resistance R10；
One end connection -5V voltage sources of the resistance R5, the other end are connected with one end of the resistance R6；The one of the resistance R7
Connection+5V voltage sources are held, the other end is connected with one end of the resistance R6；The other end of the resistance R6 is transported with the low-power consumption
Calculate amplifier U2 inverting input connection；One end of the resistance R8 be the second amplifying circuit input, the other end
It is connected with the inverting input of the low consumed power operational amplifier U2；One end of the resistance R9 and the low-power consumption operation amplifier
Device U2 normal phase input end connection, other end ground connection；The both ends of the resistance R10 respectively with the low consumed power operational amplifier U2
Inverting input connected with output end；The output end of the low consumed power operational amplifier U2 is defeated for the second amplifying circuit
Go out end.
7. online dissolved oxygen and the pH monitor according to any one of claim 1 to 6, it is characterised in that：The power supply mould
Block includes battery and power supply adaptor, and external power source is charged by the power supply adaptor to the battery, the electric power storage
Other electronics are given in pond.
8. online dissolved oxygen and the pH monitor according to any one of claim 1 to 6, it is characterised in that：The power supply mould
Block includes solar panel, solar recharging manager and the battery being sequentially connected electrically；The solar recharging manager
With maximum power tracing function.
9. online dissolved oxygen and the pH monitor according to any one of claim 1 to 6, it is characterised in that：Also include display
Unit and input block, the display unit and input block with the monolithic mechatronics；The display unit uses liquid
Crystal display screen, the input block use button.
10. online dissolved oxygen and the pH monitor according to any one of claim 1 to 6, it is characterised in that：Also include and institute
The alarm unit of monolithic mechatronics is stated, the alarm unit uses buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720693042.7U CN206975007U (en) | 2017-06-14 | 2017-06-14 | Online dissolved oxygen and pH monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720693042.7U CN206975007U (en) | 2017-06-14 | 2017-06-14 | Online dissolved oxygen and pH monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206975007U true CN206975007U (en) | 2018-02-06 |
Family
ID=61407705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720693042.7U Expired - Fee Related CN206975007U (en) | 2017-06-14 | 2017-06-14 | Online dissolved oxygen and pH monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206975007U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114813864A (en) * | 2022-03-25 | 2022-07-29 | 上海博取仪器有限公司 | Data acquisition module for pH and dissolved oxygen |
| CN114813865A (en) * | 2022-03-25 | 2022-07-29 | 上海博取仪器有限公司 | Split type sensor universal for pH and dissolved oxygen |
-
2017
- 2017-06-14 CN CN201720693042.7U patent/CN206975007U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114813864A (en) * | 2022-03-25 | 2022-07-29 | 上海博取仪器有限公司 | Data acquisition module for pH and dissolved oxygen |
| CN114813865A (en) * | 2022-03-25 | 2022-07-29 | 上海博取仪器有限公司 | Split type sensor universal for pH and dissolved oxygen |
| CN114813865B (en) * | 2022-03-25 | 2023-10-27 | 上海博取仪器有限公司 | PH and dissolved oxygen general split type sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200219 Address after: Room 301-10, office on the third floor, No. 3166, Baijiao Road, Chengdong, Baijiao Town, Doumen District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Shengshi Ronghe Sensor Technology Co.,Ltd. Address before: 518000 Futian building, Shennan Middle Road, Futian street, Shenzhen, Guangdong, Futian District, 1802 Patentee before: SHENZHEN SHENGSHI RONGHE TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 |