CN2058770U - Multifunctional digital ion meter - Google Patents
Multifunctional digital ion meter Download PDFInfo
- Publication number
- CN2058770U CN2058770U CN 89213785 CN89213785U CN2058770U CN 2058770 U CN2058770 U CN 2058770U CN 89213785 CN89213785 CN 89213785 CN 89213785 U CN89213785 U CN 89213785U CN 2058770 U CN2058770 U CN 2058770U
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- CN
- China
- Prior art keywords
- soil
- solution
- digital
- utility
- multifunctional digital
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a multifunctional digital ion meter used for measuring the 'color stage' of chlorophyll of plants, the pH (PX) value of soil and plants, the ion concentration in solution, the galvanic potential of subterranean water and the oxidation-reduction potential of soil. The multifunctional digital ion meter is composed of a display, a digital to analogue conversion integrated circuit, a temperature compensation circuit and a reference positioning circuit. The advanatges of the utility model are as follows: (1) the multifunctional digital ion meter can measure the 'color stage' of chlorophyll of plants and the nitrogen content in nutrient solution in soil and plants, the multifunctional digital ion meter provides reliable and scientific reference for fertilization according soil and foliage, the multifunctional digital ion meter can measure the pH (PX) value of solution, the ion concentration of solution, the galvanic potential of subterranean water and the oxidation-reduction potential of soil; (2) the utility model has the advantages of high sensitivity, stable performance, less power consumption, low cost, light weight, convenient portability, small volume and convenient use.
Description
The utility model is the PH(Px that is used to measure plant chlorophyll " look level ", soil, plant) value, the ion concentration in the solution, the current potential of underground water and the Eo+ of soil.
All the time, the classic method that China agricultural sector executes control nitrogenous fertilizer to plants such as paddy rice is that the shade of with the naked eye identifying plant leaf blades such as its paddy rice carries out, in recent years, thereby comparing, the color of the blade of the color of blade when having adopted the various critical conditions with reference to plants such as paddy rice and plant such as the colorimetric card made and paddy rice executes control nitrogenous fertilizer, its shortcoming is: owing to adopted method intuitively, particularly each one eyesight is different, bring very big error, can not execute the control chemical fertilizer to the variation of plants such as soil, paddy rice reliable scientific basis is provided.In addition, present acidometer, ion concentration is taken into account pot, and to exist degree of accuracy poor, and power consumption is big, and volume is big, and inconvenience is carried, and the cost height is difficult to shortcomings such as penetration and promotion.
The purpose of this utility model is to overcome above-mentioned weak point and a kind of multifunction digital ionometer is provided.
The utility model is by 3 1/2 displays (1), digital-to-analog conversion integrated circuit (IC
1), temperature-compensation circuit (2), reference positioning circuit (3) form.Digital-to-analog conversion integrated circuit (IC
1) the 2nd to the 25th pin be connected with 3 1/2 displays (1), temperature-compensation circuit (2) is by variable resistor (W
1, W
2, W
3) form and with toggle switch (K
1) and digital-to-analog conversion integrated circuit (IC
1) the 31st, 35 pin connect, reference positioning circuit (3) is by resistance (R
1, R
2), variable resistor (W
4), power supply (U
2), electrochemical capacitor (C
1, C
2) form variable resistor (W
4) moving point and toggle switch (K
1) connect resistance (R
1, R
2) common point and electrochemical capacitor (C
2) positive pole and digital-to-analog conversion integrated circuit (IC
1) the 32nd pin connect.
Below in conjunction with accompanying drawing the utility model is elaborated:
Fig. 1 is the utility model profile front schematic view.
Fig. 2 is a circuit block diagram of the present utility model.
Fig. 3 is circuit theory diagrams of the present utility model.
Fig. 4 is the utility model photoelectric device synoptic diagram.
Referring to Fig. 3, toggle switch (K on the utility model circuit theory diagrams
1) position at place is for measuring plant chlorophyll " look level ", soil, the pH value of plant and the ion concentration in the solution; Resistance (R
3), electric capacity (C
3, C
4) form external integrating circuit and with digital-to-analog conversion integrated circuit (IC
1) the 27th, 28,29 pin connect; Resistance (R
4), electric capacity (C
5) form the external clock pulsing circuit and with digital-to-analog conversion integrated circuit (IC
1) the 38th, 39,40 pin connect; The utility model is by importing positive pole (4) and importing negative pole (5) simulating signal to be input to digital-to-analog conversion integrated circuit (IC
1) input end (i.e. the 30th, 31,32 pin).
The utility model is when the pH value of measuring plant chlorophyll " look level ", soil, plant or ion concentration, and the positive and negative electrode of photoelectric device (6) (referring to Fig. 4) is connected with input of the present utility model anodal (4), input negative pole (5) respectively.As when measuring plant chlorophyll " look level ", " look level " sheet (should " look level " sheet being at film that the polylith that the blade transmittance in each growth period is made is of different shades according to plant) that will be similar to the measured leaf color earlier is placed on the photographic hole (7) of photoelectric device (6), with adjustment turn-knob (W
3) transfer to 0 ℃ of position and regulate location turn-knob (W
4), make display (1) show the displayed value that is somebody's turn to do " look level " sheet defined, for example: the displayed value of a certain " look level " sheet regulation of paddy rice is 1.32, just regulates location turn-knob (W
4) make display (1) show 1.32, then the blade of paddy rice being placed on the photographic hole (7) of photoelectric device (6), the reading of this moment as display (1) is greater than 1.32, and just explanation need not applied fertilizer, otherwise, just need to apply fertilizer less than 1.32 as reading.In like manner, during the nitrogen content of nutrient solution, 3 of the known standard nitrogen solution that concentration is different add 1 nessler reagent respectively and are placed on the photographic hole (7) of photoelectric device (6) earlier in measured soil or plant, regulate location turn-knob (W
4), make display (1) demonstrate corresponding required value, as the desired displayed value of a certain known standard nitrogen solution is that 1.00(is 100PPM), and unknown soil or plant liquid 3 drop in add 1 nessler reagent after, be placed on the photographic hole (7) of photoelectric device (6), at this moment, be 0.90 as displayed value, the nitrogen content of promptly unknown nutrient solution is equivalent to the 90%(90PPM of standard solution).
The utility model is being mixed all kinds of different electrodes as selecting electrode, with saturated calomel electrode as contrast electrode, and with contrast electrode with select electrode respectively with input of the present utility model anodal (4) with import negative pole (5) and be connected, just can measure the ion concentration of various different materials.As mix nitrate radical electrode (NO
3 --electrode), just can measure nitrate nitrogen (NO
3 --N) ion concentration, its method are earlier nitrate radical electrode and saturated calomel electrode to be inserted sodium nitrate (NaNO together
3) known standard solution in, regulate temperature compensation turn-knob (W
3) on the position of solution temperature, and regulate location turn-knob (W
4) make display (1) show the displayed value that requires of this known standard solution, as to require displayed value be the 1.00(1 gram equivalent), then two electrodes are inserted in the solution of the unknown concentration that needs measurement, the numerical value that shows as display (1) is 0.85, and nitrogen (N) ion concentration is promptly 0.85 gram equivalent of the 85%(of known standard solution concentration in the solution of unknown concentration so).In addition, the utility model is with toggle switch (K
1) dial when millivolt (mv) shelves, with the needle-like platinum electrode as selecting electrode, saturated calomel electrode is as contrast electrode, be connected with input anodal (4) with input negative pole (5) respectively, can measure the current potential of underground water and the Eo+ of soil, its method is to go in needle-like platinum electrode and the saturated calomel electrode insertion soil, after the numeral that device to be shown (1) shows is stable, can draw the Eo+ of soil according to following formula
E
Show=E
Calomel-E
Platinum
E in the formula
ShowBe the demonstration current potential of display (1), E
CalomelWhen normal temperature (25 ℃) is+243 millivolts (mv), E
PlatinumEo+ for soil.
For example: the displayed value of display (1) is E
Show=-32 millivolts
E
Platinum=E
Calomel-E
Show=243-(-32)=275 millivolt.
The Eo+ that is soil is 275 millivolts.
Referring to Fig. 3, the utility model is owing to adopted field effect transistor (BG
1) directly import digital-to-analog conversion integrated circuit (IC
1) the 32nd pin, thereby it is big to have input impedance, high sensitivity, characteristics such as stable performance.
Great advantage of the present utility model is: (1) has the nitrogen content of nutrient solution in measurement plant chlorophyll " look level " and soil, the plant, for because of soil, because leaf fertilizer provides reliable scientific basis, and can measure the PH(PX of solution) ion concentration and the current potential of underground water and the oxidation-reduction potential of soil of value and solution; (2) highly sensitive, stable performance, power consumption is few, and cost is low, and volume is few, and is in light weight, easy to use, is convenient for carrying etc.
Claims (1)
1, a kind ofly is used to measure plant chlorophyll " look level ", the PH of soil, plant (PX) value, ion concentration in the solution, the multifunction digital ionometer of the current potential of underground water and the Eo+ of soil is characterized in that by 3 1/2 displays (1), digital-to-analog conversion integrated circuit (IC
1), temperature-compensation circuit (2), reference positioning circuit (3) form; Digital-to-analog conversion integrated circuit (IC
1) the 2nd to the 25th pin be connected with 3 1/2 displays (1), temperature-compensation circuit (2) is by variable resistor (W
1, W
2, W
3) form and with toggle switch (K
1) and digital-to-analog conversion integrated circuit (IC
1) be connected with the 31st, 35 pin, reference positioning circuit (3) is by resistance (R
1, R
2), variable resistor (W
4), power supply (U
2), electrochemical capacitor (C
1, C
2) form variable resistor (W
4) moving point and toggle switch (K
1) connect resistance (R
1, R
2) common point and electrochemical capacitor (C
2) positive pole and digital-to-analog conversion integrated circuit (IC
1) the 32nd pin connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213785 CN2058770U (en) | 1989-07-06 | 1989-07-06 | Multifunctional digital ion meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89213785 CN2058770U (en) | 1989-07-06 | 1989-07-06 | Multifunctional digital ion meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2058770U true CN2058770U (en) | 1990-06-27 |
Family
ID=4869688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89213785 Withdrawn CN2058770U (en) | 1989-07-06 | 1989-07-06 | Multifunctional digital ion meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2058770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974055A (en) * | 2016-04-28 | 2016-09-28 | 北京农业信息技术研究中心 | Soilless culture nutrient solution phosphorus concentration online detection system and detection method thereof |
-
1989
- 1989-07-06 CN CN 89213785 patent/CN2058770U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974055A (en) * | 2016-04-28 | 2016-09-28 | 北京农业信息技术研究中心 | Soilless culture nutrient solution phosphorus concentration online detection system and detection method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |