CN200989892Y - Water quality detector - Google Patents
Water quality detector Download PDFInfo
- Publication number
- CN200989892Y CN200989892Y CN 200620016017 CN200620016017U CN200989892Y CN 200989892 Y CN200989892 Y CN 200989892Y CN 200620016017 CN200620016017 CN 200620016017 CN 200620016017 U CN200620016017 U CN 200620016017U CN 200989892 Y CN200989892 Y CN 200989892Y
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- China
- Prior art keywords
- water quality
- detecting device
- quality detecting
- circuit
- conversion circuit
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000011664 signaling Effects 0.000 claims description 10
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000035622 drinking Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000012206 bottled water Nutrition 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a water quality detecting device which includes a first and a second detecting electrodes which are distantly arranged, a resistance measuring circuit which is used to measure the resistance of the water to be measured between the first and the second detecting electrodes, a signal conversing circuit which is connected with the resistance measuring circuit, and a communication interface connected with the signal conversion circuit and transmitting the output signals of the signal conversion circuit to a hand-held mobile terminal. By the structures, the mobile phones, a PDA, etc. hand-held mobile terminals at present which are generally used are sufficiently taken as data disposal and output equipment of the water quality detecting device, the cost and the volume of the prior portable water quality detecting equipments are largely reduced. Meanwhile, for the manufacturers of mobile phones or the PDA manufacturer, the function and practicability of the mobile phones are further increased by taking the water quality detecting device of the utility model as a practical selectable part or largess of mobile phone or PDA.
Description
[technical field]
The utility model relates to a kind of water quality detecting device, more specifically relates to a kind of portable water quality detecting device based on resistance measurement.
[background technology]
Along with the raising of people's living standard, increasing people like out on tours, comprise activities such as open-air camping, exploration.Because lost or in the open air the activity time longer, the traveller might run into and carry the not enough situation of potable water, at this time the traveller has to fetch water on the spot.Thereby utilize portable water quality detecting device to detect that open-air water source is whether suitable for drinking will directly to have influence on user's health status.Electrical conductivity of water (resistance) is an important index weighing water quality, and it can reflect the electrolyte concentration that exists in the water outlet.Electrolyte concentration is high more in the water, illustrates that water quality is poor more, otherwise explanation water quality is good more.Some portable water quality detecting device obtains electrical conductivity of water to be detected, and then judges whether the electrolytical concentration of water to be detected is suitable for drinking by measuring the resistance value of the water to be detected between two fixed electordes at present.But existing portable water quality detecting device also further comprises display device and data processing equipment except that the testing circuit of necessity, this has not only increased the cost of water quality detecting device, also increase the volume of water quality detecting device greatly, made this water quality detecting device be not easy to carry.
[utility model content]
Portable water quality detecting device also further comprises display device and data processing equipment in the prior art except that the testing circuit of necessity in order to solve, and makes the technical matters that water quality detecting device cost and volume are excessive.The utility model proposes a kind of can matching with mobile phone or the portable water quality detecting device that uses of hand-held portable terminal such as PDA.
Portable water quality detecting device also further comprises display device and data processing circuit in the utility model solution prior art except that the testing circuit of necessity, make the excessive technical scheme that technical matters adopted of water quality detecting device cost and volume be: a kind of water quality detecting device is provided, and this water quality detecting device comprises: first and second detecting electrodes that the interval is provided with; Be used to measure the resistance measuring circuit of the resistance value of the water to be detected between first and second detecting electrodes; The signaling conversion circuit that is connected with resistance measuring circuit, and the communication interface that is used for the output signal of signaling conversion circuit is transferred to the hand-held portable terminal that is connected with signaling conversion circuit.
According to the utility model one preferred embodiment, resistance measuring circuit comprises the power supply that is connected to first and second detecting electrodes by divider resistance.
According to the utility model one preferred embodiment, power supply further is connected with the voltage stabilizing chip.
According to the utility model one preferred embodiment, signaling conversion circuit comprises that input end is connected to the follow circuit at first and second detecting electrodes or divider resistance two ends and the analog to digital conversion circuit that is connected with the output terminal of follow circuit.
According to the utility model one preferred embodiment, communication interface is the UART interface.
According to the utility model one preferred embodiment, communication interface is connected with interface control circuit.
According to the utility model one preferred embodiment, communication interface is a USB interface.
According to the utility model one preferred embodiment, the hand-held portable terminal is the water quality detecting device power supply by USB interface.
According to the utility model one preferred embodiment, the hand-held portable terminal is mobile phone or PDA.
By adopting said structure, making full use of at present generally, hand-held portable terminals such as the mobile phone of use, PDA reduce the cost and the volume of existing portable water quality detection equipment greatly as the data processing and the output device of water quality detecting device.Simultaneously for mobile phone or PDA manufacturer, by water quality detecting device of the present utility model has further been increased cell-phone function and practicality as practical optional component or the present of mobile phone or PDA.
[description of drawings]
Fig. 1 is the circuit theory diagrams of water quality detecting device one embodiment of the present utility model;
Fig. 2 is the process flow diagram that water quality detecting device shown in Figure 1 and mobile phone are used.
[embodiment]
Below in conjunction with drawings and Examples the utility model is elaborated.
With reference to Fig. 1, Fig. 1 is the circuit theory diagrams of water quality detecting device one embodiment of the present utility model.In the present embodiment, the first and second detecting electrode P1, P2 are provided with and fixed distance at interval, general 1-10mm.Power supply S is connected to the first and second detecting electrode P1, P2 by divider resistance R2, constitutes resistance measuring circuit.Power supply S can further be connected with voltage stabilizing chip 7805, and the burning voltage of chip 7805 output 5V is so that be controlled at 0-5V with the both end voltage of divider resistance R2.Light emitting diode D1 and resistance R 1 constitute the indicating circuit of power supply S.Generally about 18M Ω * cm, the resistance of tap water is generally 3K Ω * cm to the resistivity of pure water under the normal temperature, so resistance R 2 is selected the adjustable resistance of 1K to 100K.Power supply S can use the 9V battery, also can change 6V into.The input end of the follow circuit that is made of operational amplifier A 1, A2, diode D2 and capacitor C is connected to divider resistance R2 two ends.Analog to digital conversion circuit ADC is connected the output terminal of follow circuit, and constitutes signaling conversion circuit with follow circuit.Communication interface PORT is connected to the output terminal of analog to digital converter ADC.Communication interface PORT further is connected with interface control circuit.In the present embodiment, can adopt at present in mobile phone and PDA institute generally the UART, USB interface of use as the communication interface of water quality detecting device.
Those skilled in the art can suitably change resistance measuring circuit and signaling conversion circuit described in the foregoing description according to actual conditions, for example when adopting USB interface as the communication interface of water quality detecting device, can also be inner components and parts power supply directly by USB interface by mobile phone or PDA as the detection power supply of water quality detecting device, the internal electric source of water quality detecting device be can further omit like this, thereby the cost and the volume of water quality detecting device further reduced.In addition, in the above-described embodiments, obtain the resistance value of water to be detected indirectly by measuring divider resistance R2 both end voltage, but follow circuit can be directly connected to the first and second detecting electrode P1, P2 in the practical operation.Above-mentioned modification should be considered as dropping in the scope of the present utility model equally.
Referring to Fig. 2, Fig. 2 is the process flow diagram that water quality detecting device shown in Figure 1 and mobile phone are used.When detecting, at first mobile phone is in holding state, by communication interface PORT water quality detecting device is connected on the mobile phone then.Subsequently, the first and second detecting electrode P1, P2 are inserted in the water to be detected, off switch K starts water quality detecting device, and light emitting diode D1 is luminous, shows that water quality detecting device is in running order.The voltage signal at divider resistance R2 two ends (promptly on the second detecting electrode P2) enters analog to digital converter ADC through follow circuit.The voltage signal that analog to digital converter ADC exports follow circuit carries out analog to digital conversion.Send into communication interface PORT through the voltage signal after the analog to digital conversion, be input to mobile phone by communication interface PORT again.After portable terminal detects the signal of communication interface PORT input, start the water quality detection program, input signal is carried out data processing and show testing result on the display screen of mobile phone.
The user can judge the water quality quality of water to be detected by testing result shown on the mobile phone display screen.When adopting circuit structure shown in Figure 1, the height of communication interface PORT input voltage signal can reflect the water quality situation.If voltage is lower, illustrate that the resistance of water is big, water quality is better; If opposite voltage is higher, illustrate that the resistance of water is little, electrolyte is many in the water, and water quality is relatively poor.
In the above-described embodiments, only the utility model has been carried out exemplary description, but those skilled in the art can design various embodiments according to different actual needs under the situation that does not break away from the scope and spirit that the utility model protects.
Claims (9)
1. water quality detecting device, described water quality detecting device comprises:
First and second detecting electrodes that the interval is provided with;
Be used to measure the resistance measuring circuit of the resistance value of the water to be detected between described first and second detecting electrodes;
The signaling conversion circuit that is connected with described resistance measuring circuit;
It is characterized in that: described water quality detecting device further comprises the communication interface that is used for the output signal of described signaling conversion circuit is transferred to the hand-held portable terminal that is connected with described signaling conversion circuit.
2. water quality detecting device according to claim 1 is characterized in that: described resistance measuring circuit comprises the power supply that is connected to described first and second detecting electrodes by divider resistance.
3. water quality detecting device according to claim 2 is characterized in that: described power supply further is connected with the voltage stabilizing chip.
4. water quality detecting device according to claim 1 is characterized in that: described signaling conversion circuit comprises that input end is connected to the follow circuit at described first and second detecting electrodes or described divider resistance two ends and the analog to digital conversion circuit that is connected with the output terminal of described follow circuit.
5. water quality detecting device according to claim 1 is characterized in that: described communication interface is the UART interface.
6. water quality detecting device according to claim 1 is characterized in that: described communication interface is connected with interface control circuit.
7. water quality detecting device according to claim 1 is characterized in that: described communication interface is a USB interface.
8. water quality detecting device according to claim 7 is characterized in that: described hand-held portable terminal is described water quality detecting device power supply by described USB interface.
9. water quality detecting device according to claim 1 is characterized in that: described hand-held portable terminal is mobile phone or PDA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016017 CN200989892Y (en) | 2006-11-24 | 2006-11-24 | Water quality detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016017 CN200989892Y (en) | 2006-11-24 | 2006-11-24 | Water quality detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989892Y true CN200989892Y (en) | 2007-12-12 |
Family
ID=38940929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620016017 Expired - Fee Related CN200989892Y (en) | 2006-11-24 | 2006-11-24 | Water quality detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989892Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262185A (en) * | 2011-04-26 | 2011-11-30 | 无锡捷威电子有限公司 | Test circuit for water resistance of instant heating-type electric water heater |
| TWI487909B (en) * | 2012-11-19 | 2015-06-11 | Huang Chu Huang | An intelligent portable water analysis device |
-
2006
- 2006-11-24 CN CN 200620016017 patent/CN200989892Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262185A (en) * | 2011-04-26 | 2011-11-30 | 无锡捷威电子有限公司 | Test circuit for water resistance of instant heating-type electric water heater |
| CN102262185B (en) * | 2011-04-26 | 2013-04-17 | 无锡捷威电子有限公司 | Test circuit for water resistance of instant heating-type electric water heater |
| TWI487909B (en) * | 2012-11-19 | 2015-06-11 | Huang Chu Huang | An intelligent portable water analysis device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071212 Termination date: 20111124 |