CN203894186U - Two-wire system water sensor circuit - Google Patents
Two-wire system water sensor circuit Download PDFInfo
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- CN203894186U CN203894186U CN201420295301.7U CN201420295301U CN203894186U CN 203894186 U CN203894186 U CN 203894186U CN 201420295301 U CN201420295301 U CN 201420295301U CN 203894186 U CN203894186 U CN 203894186U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 15
- 239000000523 sample Substances 0.000 claims abstract description 14
- 102100029952 Double-strand-break repair protein rad21 homolog Human genes 0.000 claims description 6
- 101100086368 Homo sapiens RAD21 gene Proteins 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000002689 soil Substances 0.000 abstract description 6
- 230000002262 irrigation Effects 0.000 abstract description 2
- 238000003973 irrigation Methods 0.000 abstract description 2
- 241000196324 Embryophyta Species 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
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Abstract
The utility model discloses a two-wire system water sensor circuit. The important content of irrigation management is as follows: the two-wire system water sensor circuit comprises a socket CON3 and a probe interface RE, wherein the water content of soil can be timely known through the data measured by the probe interface RE, water can be reasonably organized, and water of soil can be controlled and adjusted to meet the water requirements for crops and plants.
Description
Technical field
The utility model relates to a kind of moisture transducer field, specifically a kind of moisture two-wire system sensor circuit.
Background technology
Moisture transducer is mainly measured for the moisture of porous medium, and porous medium is divided into again gross porosity and pore.Gross porosity refers to inorganic weed fertilizer, river silt, plant powder, sawdust, blinding etc.Pore refers to soil, concrete, breeze etc.
Gross porosity and the fundamental difference of the physical features of pore are that moisture anharmonic ratio linearity curve is just in time in two different regions.Pore material is 20% with lower area, and gross porosity material is in 20% above region.The moisture transducer of prior art has only possessed single measurement attribute, is unfavorable for professional's use.
Utility model content
The purpose of this utility model is to provide a kind of moisture two-wire system sensor circuit, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of moisture two-wire system sensor circuit, comprise socket CON3 and probe interface RE, the two ends difference contact resistance R111 of described probe interface RE and one end of resistance R 112, and resistance R 111 and resistance R 112 series connection, contact resistance R222 successively on the tie point of described resistance R 112 and probe interface RE, resistance R 221, 1 pin of electric capacity HE4 and operational amplifier HU1A, the negative pole of described electric capacity HE4 connects the adjustable side of slide rheostat HW1 and one end of electric capacity HC4, 1 pin of the other end concatenation operation amplifier HU1A of described slide rheostat HW, the 3 pin ground connection of the other end of electric capacity HC4 and operational amplifier HU1A, 2 pin of described operational amplifier HU1A connect one end of diode HD2 and one end of resistance HR1, 5 pin of described operational amplifier HU1A connect respectively one end of the other end and the diode HD1 of diode HD2, the other end of the other end of diode HD1 and resistance HR1 is connected connects with one end of resistance HR2 simultaneously, one end of the other end difference contact resistance HR3 of described resistance HR2 and the positive pole of electric capacity HE5, the minus earth of electric capacity HE5, 4 pin of the other end concatenation operation amplifier HU1A of described resistance HR3, one end of resistance HR9 and stake resistance HR4, 1 pin of the tie point concatenation operation amplifier HU2A of described resistance HR3 and stake resistance HR4, one end of the 2 pin contact resistance HR11 of described operational amplifier HU2A and one end of HR16, the other end ground connection of described resistance HR11, 5 pin of the other end concatenation operation amplifier HU2A of HR16 and one end of resistance R 31, 4 pin of the 4 pin concatenation operation amplifier HU1A of described operational amplifier HU2A and one end of resistance R 28, the other end of resistance R 28 connects the adjustable side of adjustable resistance TW5, the other end contact resistance R30 of adjustable resistance TW5, 1 pin of the other end concatenation operation amplifier HU3 of resistance R 30 and one end of resistance R 40, 2 pin of the other end concatenation operation amplifier HU3 of resistance R 31, the 3 pin ground connection of operational amplifier HU3, 5 pin of the other end concatenation operation amplifier HU3 of described resistance R 40 and one end of resistance HR17, the other end of resistance HR17 connects one end of electric capacity HC5 and one end of resistance HR18, 1 pin of the other end concatenation operation amplifier HU2B of described resistance HR18 and one end of electric capacity HC6, the equal ground connection in one end of the other end of electric capacity HC6 and resistance HR19, 2 other ends of pin contact resistance HR19 and one end of resistance HR20 of described operational amplifier HU2B, 5 pin of described operational amplifier HU2B connect the other end of electric capacity HC5, one end of the other end of resistance HR20 and resistance R 41, 1 pin of the other end concatenation operation amplifier TU2B of described resistance R 41, one end of the 5 pin contact resistance HR21 of described operational amplifier TU2B, the base stage of the other end connecting triode Q2 of resistance HR21, 4 pin of the collector concatenation operation amplifier HU1A of described triode Q2, 2 pin of the emitter concatenation operation amplifier TU2B of described triode Q2 and one end of resistance R 22, the equal ground connection of 3 pin of the other end of described resistance R 22 and operational amplifier TU2B, described resistance R 111 is connected one end of electric capacity HE3 with one end of probe interface RE tie point, one end of other end contact resistance HR5 of described electric capacity HE3 and one end of voltage stabilizing diode HZ1, the other end ground connection of voltage stabilizing diode HZ1, 7 pin of the other end concatenation operation amplifier HU1B of described resistance HR5, one end of one end of resistance R 6 and resistance HR7, the other end of the 5 pin contact resistance R6 of described operational amplifier HU1B, one end of one end of resistance HR8 and resistance HR9, 6 other ends of pin contact resistance HR7 and one end of electric capacity HC3 of operational amplifier HU1B, the other end ground connection of described electric capacity HC3, the other end ground connection of described resistance HR8, the 2 pin ground connection of described socket CON3, 3 pin of described socket CON3 connect one end of diode D1 one end and diode D2, the other end of described diode D2 connects the positive pole of electric capacity HC1, the input end of the positive pole of electric capacity HE1 and three-terminal voltage-stabilizing pipe U1, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U1 of described electric capacity HC1 and electric capacity HE1, the output terminal of described three-terminal voltage-stabilizing pipe U1 connects the positive pole of electric capacity HC2, the positive pole of electric capacity HE2, 4 pin of the other end of resistance HR9 and operational amplifier HU1A, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U1 of described electric capacity HC2 and electric capacity HE2, the earth terminal ground connection of described three-terminal voltage-stabilizing pipe U1, the other end of described diode D1 connects electric capacity TC1, the input end of electric capacity TE1 and three-terminal voltage-stabilizing pipe U2, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U2 of described electric capacity TC1 and electric capacity TE1, described three-terminal voltage-stabilizing pipe U2 output terminal connects electric capacity TC2 and electric capacity TE2, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U2 of electric capacity TC2 and electric capacity TE2, 1 pin of the earth terminal gang socket CON3 of described three-terminal voltage-stabilizing pipe U2, described three-terminal voltage-stabilizing pipe U2 output terminal contact resistance TR1, resistance TR2, 4 pin of operational amplifier TU1A, 4 pin of operational amplifier TU2 and the collector of triode Q1, the earth terminal of described three-terminal voltage-stabilizing pipe U2 connects one end of electric capacity TC3, adjustable resistance TW2, adjustable resistance TW1, resistance TR9, 3 pin of operational amplifier TU1A, 3 pin of operational amplifier TU2 and resistance TR15, the other end of described resistance TR1 connects the other end, resistance TR16 and the resistance TR4 of electric capacity TC3,1 pin of the other end concatenation operation amplifier TU1A of described resistance TR4,5 pin of the other end concatenation operation amplifier TU1A of described resistance TR16, the other end contact resistance TR5 of described resistance TR2 and resistance TR3,2 pin of the other end concatenation operation amplifier TU1A of resistance TR5 and one end of resistance TR6, one end of other end contact resistance TR8 of resistance TR6 is, one end of the other end of adjustable resistance TW1 and resistance TR7,5 pin of the other end concatenation operation amplifier TU1A of described resistance TR7, the other end of described TR3 connects the other end of adjustable resistance TW2, the other end of the other end contact resistance TR9 of described resistance TR8, two stitch of the two ends gang socket CON2 of described electric capacity TC3, one end of the 5 pin contact resistance TR10 of described operational amplifier TU1A, the other end contact resistance TR11 of resistance TR10 and electric capacity TC4, 1 pin of the other end concatenation operation amplifier TU1B of described electric capacity TC4, 3 pin of the other end concatenation operation amplifier TU1B of resistance TR11 and one end of electric capacity TC5, the other end of described electric capacity TC5 connects the earth terminal of three-terminal voltage-stabilizing pipe U2, 2 one end of pin contact resistance TR12 and one end of resistance TR13 of described operational amplifier TU1B, the other end of resistance TR12 connects the earth terminal of three-terminal voltage-stabilizing pipe U2, 1 pin of the other end concatenation operation amplifier TU1B of resistance TR13, one end of the 1 pin contact resistance TR30 of described operational amplifier TU1B, 1 pin of the other end concatenation operation amplifier TU2 of resistance TR30, 2 other ends of pin contact resistance TR15 and the emitter of triode Q1 of operational amplifier TU2, one end of the base stage contact resistance TR14 of described triode Q1, 5 pin of the other end operational amplifier TU2 of described resistance TR14.
Compared with prior art, the beneficial effects of the utility model are: grasp in time the water cut of soil, rationalization's water, control and regulate the holard assign to meet crops, plant to need water to require be the important content of irrigation management.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of moisture two-wire system sensor circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of moisture two-wire system sensor circuit, comprise socket CON3 and probe interface RE, the two ends difference contact resistance R111 of described probe interface RE and one end of resistance R 112, and resistance R 111 and resistance R 112 series connection, contact resistance R222 successively on the tie point of described resistance R 112 and probe interface RE, resistance R 221, 1 pin of electric capacity HE4 and operational amplifier HU1A, the negative pole of described electric capacity HE4 connects the adjustable side of slide rheostat HW1 and one end of electric capacity HC4, 1 pin of the other end concatenation operation amplifier HU1A of described slide rheostat HW, the 3 pin ground connection of the other end of electric capacity HC4 and operational amplifier HU1A, 2 pin of described operational amplifier HU1A connect one end of diode HD2 and one end of resistance HR1, 5 pin of described operational amplifier HU1A connect respectively one end of the other end and the diode HD1 of diode HD2, the other end of the other end of diode HD1 and resistance HR1 is connected connects with one end of resistance HR2 simultaneously, one end of the other end difference contact resistance HR3 of described resistance HR2 and the positive pole of electric capacity HE5, the minus earth of electric capacity HE5, 4 pin of the other end concatenation operation amplifier HU1A of described resistance HR3, one end of resistance HR9 and stake resistance HR4, 1 pin of the tie point concatenation operation amplifier HU2A of described resistance HR3 and stake resistance HR4, one end of the 2 pin contact resistance HR11 of described operational amplifier HU2A and one end of HR16, the other end ground connection of described resistance HR11, 5 pin of the other end concatenation operation amplifier HU2A of HR16 and one end of resistance R 31, 4 pin of the 4 pin concatenation operation amplifier HU1A of described operational amplifier HU2A and one end of resistance R 28, the other end of resistance R 28 connects the adjustable side of adjustable resistance TW5, the other end contact resistance R30 of adjustable resistance TW5, 1 pin of the other end concatenation operation amplifier HU3 of resistance R 30 and one end of resistance R 40, 2 pin of the other end concatenation operation amplifier HU3 of resistance R 31, the 3 pin ground connection of operational amplifier HU3, 5 pin of the other end concatenation operation amplifier HU3 of described resistance R 40 and one end of resistance HR17, the other end of resistance HR17 connects one end of electric capacity HC5 and one end of resistance HR18, 1 pin of the other end concatenation operation amplifier HU2B of described resistance HR18 and one end of electric capacity HC6, the equal ground connection in one end of the other end of electric capacity HC6 and resistance HR19, 2 other ends of pin contact resistance HR19 and one end of resistance HR20 of described operational amplifier HU2B, 5 pin of described operational amplifier HU2B connect the other end of electric capacity HC5, one end of the other end of resistance HR20 and resistance R 41, 1 pin of the other end concatenation operation amplifier TU2B of described resistance R 41, one end of the 5 pin contact resistance HR21 of described operational amplifier TU2B, the base stage of the other end connecting triode Q2 of resistance HR21, 4 pin of the collector concatenation operation amplifier HU1A of described triode Q2, 2 pin of the emitter concatenation operation amplifier TU2B of described triode Q2 and one end of resistance R 22, the equal ground connection of 3 pin of the other end of described resistance R 22 and operational amplifier TU2B, described resistance R 111 is connected one end of electric capacity HE3 with one end of probe interface RE tie point, one end of other end contact resistance HR5 of described electric capacity HE3 and one end of voltage stabilizing diode HZ1, the other end ground connection of voltage stabilizing diode HZ1, 7 pin of the other end concatenation operation amplifier HU1B of described resistance HR5, one end of one end of resistance R 6 and resistance HR7, the other end of the 5 pin contact resistance R6 of described operational amplifier HU1B, one end of one end of resistance HR8 and resistance HR9, 6 other ends of pin contact resistance HR7 and one end of electric capacity HC3 of operational amplifier HU1B, the other end ground connection of described electric capacity HC3, the other end ground connection of described resistance HR8.
Further, the 2 pin ground connection of described socket CON3, 3 pin of described socket CON3 connect one end of diode D1 one end and diode D2, the other end of described diode D2 connects the positive pole of electric capacity HC1, the input end of the positive pole of electric capacity HE1 and three-terminal voltage-stabilizing pipe U1, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U1 of described electric capacity HC1 and electric capacity HE1, the output terminal of described three-terminal voltage-stabilizing pipe U1 connects the positive pole of electric capacity HC2, the positive pole of electric capacity HE2, 4 pin of the other end of resistance HR9 and operational amplifier HU1A, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U1 of described electric capacity HC2 and electric capacity HE2, the earth terminal ground connection of described three-terminal voltage-stabilizing pipe U1, the other end of described diode D1 connects electric capacity TC1, the input end of electric capacity TE1 and three-terminal voltage-stabilizing pipe U2, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U2 of described electric capacity TC1 and electric capacity TE1, described three-terminal voltage-stabilizing pipe U2 output terminal connects electric capacity TC2 and electric capacity TE2, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U2 of electric capacity TC2 and electric capacity TE2, 1 pin of the earth terminal gang socket CON3 of described three-terminal voltage-stabilizing pipe U2, described three-terminal voltage-stabilizing pipe U2 output terminal contact resistance TR1, resistance TR2, 4 pin of operational amplifier TU1A, 4 pin of operational amplifier TU2 and the collector of triode Q1, the earth terminal of described three-terminal voltage-stabilizing pipe U2 connects one end of electric capacity TC3, adjustable resistance TW2, adjustable resistance TW1, resistance TR9, 3 pin of operational amplifier TU1A, 3 pin of operational amplifier TU2 and resistance TR15, the other end of described resistance TR1 connects the other end, resistance TR16 and the resistance TR4 of electric capacity TC3,1 pin of the other end concatenation operation amplifier TU1A of described resistance TR4,5 pin of the other end concatenation operation amplifier TU1A of described resistance TR16, the other end contact resistance TR5 of described resistance TR2 and resistance TR3,2 pin of the other end concatenation operation amplifier TU1A of resistance TR5 and one end of resistance TR6, one end of other end contact resistance TR8 of resistance TR6 is, one end of the other end of adjustable resistance TW1 and resistance TR7,5 pin of the other end concatenation operation amplifier TU1A of described resistance TR7, the other end of described TR3 connects the other end of adjustable resistance TW2, the other end of the other end contact resistance TR9 of described resistance TR8, two stitch of the two ends gang socket CON2 of described electric capacity TC3, one end of the 5 pin contact resistance TR10 of described operational amplifier TU1A, the other end contact resistance TR11 of resistance TR10 and electric capacity TC4, 1 pin of the other end concatenation operation amplifier TU1B of described electric capacity TC4, 3 pin of the other end concatenation operation amplifier TU1B of resistance TR11 and one end of electric capacity TC5, the other end of described electric capacity TC5 connects the earth terminal of three-terminal voltage-stabilizing pipe U2, 2 one end of pin contact resistance TR12 and one end of resistance TR13 of described operational amplifier TU1B, the other end of resistance TR12 connects the earth terminal of three-terminal voltage-stabilizing pipe U2, 1 pin of the other end concatenation operation amplifier TU1B of resistance TR13, one end of the 1 pin contact resistance TR30 of described operational amplifier TU1B, 1 pin of the other end concatenation operation amplifier TU2 of resistance TR30, 2 other ends of pin contact resistance TR15 and the emitter of triode Q1 of operational amplifier TU2, one end of the base stage contact resistance TR14 of described triode Q1, 5 pin of the other end operational amplifier TU2 of described resistance TR14.
Principle of work of the present utility model is: used complete mimic channel to realize medium as the electrical testing of the water percentage such as soil, weed fertilizer.By the test to conductivity corresponding to medium anharmonic ratio saturation degree.Can become electric current (two-wire system, three-wire system) or the voltage analog signal of sending linearity high level.And can tackle the situation of each species saturation.More comprehensively realize the sensor measuring ability of porous medium water percentage.Thereby in the research observing and controlling level of porous medium water percentage, provide Reliable guarantee for improving application industry control technology.This product can be linear, accurately, use flexible, the reliable and stable electrical testing of realizing water percentage.There is unique design philosophy and the unfailing performance of more convenient practicality.Product has embodied superior cost performance.Particularly gross porosity medium and deep soil water content detection application aspect under wide tender feeling condition, demonstrate outstanding stability and accuracy and practicality.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present utility model or essential characteristic, can realize the utility model with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, is therefore intended to include in the utility model dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should make instructions as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (1)
1. a moisture two-wire system sensor circuit, it is characterized in that, comprise socket CON3 and probe interface RE, the two ends difference contact resistance R111 of described probe interface RE and one end of resistance R 112, and resistance R 111 and resistance R 112 series connection, contact resistance R222 successively on the tie point of described resistance R 112 and probe interface RE, resistance R 221, 1 pin of electric capacity HE4 and operational amplifier HU1A, the negative pole of described electric capacity HE4 connects the adjustable side of slide rheostat HW1 and one end of electric capacity HC4, 1 pin of the other end concatenation operation amplifier HU1A of described slide rheostat HW, the 3 pin ground connection of the other end of electric capacity HC4 and operational amplifier HU1A, 2 pin of described operational amplifier HU1A connect one end of diode HD2 and one end of resistance HR1, 5 pin of described operational amplifier HU1A connect respectively one end of the other end and the diode HD1 of diode HD2, the other end of the other end of diode HD1 and resistance HR1 is connected connects with one end of resistance HR2 simultaneously, one end of the other end difference contact resistance HR3 of described resistance HR2 and the positive pole of electric capacity HE5, the minus earth of electric capacity HE5, 4 pin of the other end concatenation operation amplifier HU1A of described resistance HR3, one end of resistance HR9 and stake resistance HR4, 1 pin of the tie point concatenation operation amplifier HU2A of described resistance HR3 and stake resistance HR4, one end of the 2 pin contact resistance HR11 of described operational amplifier HU2A and one end of HR16, the other end ground connection of described resistance HR11, 5 pin of the other end concatenation operation amplifier HU2A of HR16 and one end of resistance R 31, 4 pin of the 4 pin concatenation operation amplifier HU1A of described operational amplifier HU2A and one end of resistance R 28, the other end of resistance R 28 connects the adjustable side of adjustable resistance TW5, the other end contact resistance R30 of adjustable resistance TW5, 1 pin of the other end concatenation operation amplifier HU3 of resistance R 30 and one end of resistance R 40, 2 pin of the other end concatenation operation amplifier HU3 of resistance R 31, the 3 pin ground connection of operational amplifier HU3, 5 pin of the other end concatenation operation amplifier HU3 of described resistance R 40 and one end of resistance HR17, the other end of resistance HR17 connects one end of electric capacity HC5 and one end of resistance HR18, 1 pin of the other end concatenation operation amplifier HU2B of described resistance HR18 and one end of electric capacity HC6, the equal ground connection in one end of the other end of electric capacity HC6 and resistance HR19, 2 other ends of pin contact resistance HR19 and one end of resistance HR20 of described operational amplifier HU2B, 5 pin of described operational amplifier HU2B connect the other end of electric capacity HC5, one end of the other end of resistance HR20 and resistance R 41, 1 pin of the other end concatenation operation amplifier TU2B of described resistance R 41, one end of the 5 pin contact resistance HR21 of described operational amplifier TU2B, the base stage of the other end connecting triode Q2 of resistance HR21, 4 pin of the collector concatenation operation amplifier HU1A of described triode Q2, 2 pin of the emitter concatenation operation amplifier TU2B of described triode Q2 and one end of resistance R 22, the equal ground connection of 3 pin of the other end of described resistance R 22 and operational amplifier TU2B, described resistance R 111 is connected one end of electric capacity HE3 with one end of probe interface RE tie point, one end of other end contact resistance HR5 of described electric capacity HE3 and one end of voltage stabilizing diode HZ1, the other end ground connection of voltage stabilizing diode HZ1, 7 pin of the other end concatenation operation amplifier HU1B of described resistance HR5, one end of one end of resistance R 6 and resistance HR7, the other end of the 5 pin contact resistance R6 of described operational amplifier HU1B, one end of one end of resistance HR8 and resistance HR9, 6 other ends of pin contact resistance HR7 and one end of electric capacity HC3 of operational amplifier HU1B, the other end ground connection of described electric capacity HC3, the other end ground connection of described resistance HR8, the 2 pin ground connection of described socket CON3, 3 pin of described socket CON3 connect one end of diode D1 one end and diode D2, the other end of described diode D2 connects the positive pole of electric capacity HC1, the input end of the positive pole of electric capacity HE1 and three-terminal voltage-stabilizing pipe U1, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U1 of described electric capacity HC1 and electric capacity HE1, the output terminal of described three-terminal voltage-stabilizing pipe U1 connects the positive pole of electric capacity HC2, the positive pole of electric capacity HE2, 4 pin of the other end of resistance HR9 and operational amplifier HU1A, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U1 of described electric capacity HC2 and electric capacity HE2, the earth terminal ground connection of described three-terminal voltage-stabilizing pipe U1, the other end of described diode D1 connects electric capacity TC1, the input end of electric capacity TE1 and three-terminal voltage-stabilizing pipe U2, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U2 of described electric capacity TC1 and electric capacity TE1, described three-terminal voltage-stabilizing pipe U2 output terminal connects electric capacity TC2 and electric capacity TE2, the be connected in parallel earth terminal of three-terminal voltage-stabilizing pipe U2 of electric capacity TC2 and electric capacity TE2, 1 pin of the earth terminal gang socket CON3 of described three-terminal voltage-stabilizing pipe U2, described three-terminal voltage-stabilizing pipe U2 output terminal contact resistance TR1, resistance TR2, 4 pin of operational amplifier TU1A, 4 pin of operational amplifier TU2 and the collector of triode Q1, the earth terminal of described three-terminal voltage-stabilizing pipe U2 connects one end of electric capacity TC3, adjustable resistance TW2, adjustable resistance TW1, resistance TR9, 3 pin of operational amplifier TU1A, 3 pin of operational amplifier TU2 and resistance TR15, the other end of described resistance TR1 connects the other end, resistance TR16 and the resistance TR4 of electric capacity TC3,1 pin of the other end concatenation operation amplifier TU1A of described resistance TR4,5 pin of the other end concatenation operation amplifier TU1A of described resistance TR16, the other end contact resistance TR5 of described resistance TR2 and resistance TR3,2 pin of the other end concatenation operation amplifier TU1A of resistance TR5 and one end of resistance TR6, one end of other end contact resistance TR8 of resistance TR6 is, one end of the other end of adjustable resistance TW1 and resistance TR7,5 pin of the other end concatenation operation amplifier TU1A of described resistance TR7, the other end of described TR3 connects the other end of adjustable resistance TW2, the other end of the other end contact resistance TR9 of described resistance TR8, two stitch of the two ends gang socket CON2 of described electric capacity TC3, one end of the 5 pin contact resistance TR10 of described operational amplifier TU1A, the other end contact resistance TR11 of resistance TR10 and electric capacity TC4, 1 pin of the other end concatenation operation amplifier TU1B of described electric capacity TC4, 3 pin of the other end concatenation operation amplifier TU1B of resistance TR11 and one end of electric capacity TC5, the other end of described electric capacity TC5 connects the earth terminal of three-terminal voltage-stabilizing pipe U2, 2 one end of pin contact resistance TR12 and one end of resistance TR13 of described operational amplifier TU1B, the other end of resistance TR12 connects the earth terminal of three-terminal voltage-stabilizing pipe U2, 1 pin of the other end concatenation operation amplifier TU1B of resistance TR13, one end of the 1 pin contact resistance TR30 of described operational amplifier TU1B, 1 pin of the other end concatenation operation amplifier TU2 of resistance TR30, 2 other ends of pin contact resistance TR15 and the emitter of triode Q1 of operational amplifier TU2, one end of the base stage contact resistance TR14 of described triode Q1, 5 pin of the other end operational amplifier TU2 of described resistance TR14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295301.7U CN203894186U (en) | 2014-06-05 | 2014-06-05 | Two-wire system water sensor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295301.7U CN203894186U (en) | 2014-06-05 | 2014-06-05 | Two-wire system water sensor circuit |
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| Publication Number | Publication Date |
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| CN203894186U true CN203894186U (en) | 2014-10-22 |
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| CN201420295301.7U Expired - Fee Related CN203894186U (en) | 2014-06-05 | 2014-06-05 | Two-wire system water sensor circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483231A (en) * | 2014-12-24 | 2015-04-01 | 黑龙江省木材科学研究所 | Wood moisture content detecting and verifying device |
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2014
- 2014-06-05 CN CN201420295301.7U patent/CN203894186U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104483231A (en) * | 2014-12-24 | 2015-04-01 | 黑龙江省木材科学研究所 | Wood moisture content detecting and verifying device |
| CN104483231B (en) * | 2014-12-24 | 2017-08-11 | 黑龙江省木材科学研究所 | A kind of moisture content detection check device |
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