CN203720131U - Detecting device for impedance type moisture content sensor - Google Patents
Detecting device for impedance type moisture content sensor Download PDFInfo
- Publication number
- CN203720131U CN203720131U CN201420007409.1U CN201420007409U CN203720131U CN 203720131 U CN203720131 U CN 203720131U CN 201420007409 U CN201420007409 U CN 201420007409U CN 203720131 U CN203720131 U CN 203720131U
- Authority
- CN
- China
- Prior art keywords
- circuit
- input end
- output terminal
- type moisture
- impedance type
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 230000003321 amplification Effects 0.000 claims abstract description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 15
- 239000000412 dendrimer Substances 0.000 claims description 3
- 229920000736 dendritic polymer Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000010779 crude oil Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- HJVCHYDYCYBBQX-HLTLHRPFSA-N (2s,3s,4e,6e,8s,9s)-3-amino-9-methoxy-2,6,8-trimethyl-10-phenyldeca-4,6-dienoic acid Chemical compound OC(=O)[C@@H](C)[C@@H](N)/C=C/C(/C)=C/[C@H](C)[C@@H](OC)CC1=CC=CC=C1 HJVCHYDYCYBBQX-HLTLHRPFSA-N 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- PBLZLIFKVPJDCO-UHFFFAOYSA-N omega-Aminododecanoic acid Natural products NCCCCCCCCCCCC(O)=O PBLZLIFKVPJDCO-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a detecting device for an impedance type moisture content sensor. The detecting device comprises a reference circuit, a symmetric bipolar voltage generation circuit, a high-frequency alternating current drive signal generation circuit, a power amplification circuit, a discharging circuit, an effective value circuit and a micro-control circuit. The detecting device designed by the utility model is simple in structure, is convenient to mount and is capable of remarkably improving the overall measurement precision of the impedance type moisture content sensor.
Description
Technical field
The utility model relates to a kind of impedance type moisture sensor pick-up unit.
Background technology
Crude oil water content is the significant data in crude production, the important parameter index of research oil-field development situation, in crude production and storage and transport process, the detection of crude oil water content is very important, directly affect that crude oil production, dehydration, collection are defeated, sale, refinement etc., affect quality and the cost of development of crude oil, Fig. 7 is the structural drawing of impedance type moisture sensor, impedance type moisture sensor has four electrodes, i.e. two exciting electrodes and two potential electrode.
Current impedance type watercutmeter is because pumping signal is not strict symmetry, therefore there is charge accumulated in long-term work, can form error, the utility model utilizes MSP430 series monolithic for information processing core, for providing, impedance sensor exchanges symmetrical drive signal, and the positive and negative exciting electrode timing short circuit of control group formula sensor, realize the stored charge electric discharge on exciting electrode, this device can significantly improve the overall measurement accuracy of impedance type moisture sensor.
Utility model content
Technical problem to be solved in the utility model is, overcomes the shortcoming of prior art, provides a kind of structure simple and direct, easy for installation, and can significantly improve the impedance type moisture sensor pick-up unit of the overall measurement accuracy of impedance type moisture sensor.
In order to solve above technical matters, the utility model provides a kind of impedance type moisture sensor pumping signal generation device, comprise that reference circuit, symmetric double polar voltages produce circuit, high-frequency AC excitation signal produces circuit, power amplification circuit, discharge circuit, true rms circuit and micro-control circuit, wherein:
The output terminal connected symmetrical dendrimer bipolar voltage of reference circuit produces the input end of circuit, the output terminal that symmetric double polar voltages produces circuit connects the input end that high-frequency AC excitation signal produces circuit, high-frequency AC excitation signal produces the input end of the output terminal connection power amplification circuit of circuit, and the output terminal of power amplification circuit connects the input end of discharge circuit;
The output terminal of discharge circuit connects the positive energize electrode of impedance type moisture sensor, the negative energize electrode of impedance type moisture sensor connects in analog, the positive and negative potential electrode of impedance type moisture sensor connects the input end of true rms circuit, and the output terminal of true rms circuit connects the input end of micro-control circuit;
The output terminal of micro-control circuit connects respectively the input end that high-frequency AC excitation signal produces circuit and discharge circuit.
Technique effect: impedance type moisture sensor pick-up unit provided by the utility model applies pumping signal between two exciting electrodes of impedance sensor, when fluid is when flowing through in sensor, existence due to impedance between potential electrode, known according to electrical principles, between potential electrode, produce voltage, this voltage is directly proportional to the oil-water media impedance by pipeline road, and water percentage wherein is directly depended in oil-water media impedance, therefore subsequent conditioning circuit is easy to obtain crude oil water content according to this voltage, its obvious advantage is not only to measure accurately, and structure is simple and direct, easy for installation,
Yet current impedance type watercutmeter is because pumping signal is not strict symmetry, therefore there is charge accumulated in long-term work, can form error, the utility model utilizes MSP430 series monolithic for information processing core, for providing, impedance sensor exchanges symmetrical drive signal, and the positive and negative exciting electrode timing short circuit of control group formula sensor, realize the stored charge electric discharge on exciting electrode, this device can significantly improve the overall measurement accuracy of impedance type moisture sensor.
Accompanying drawing explanation
The structured flowchart of the impedance type moisture sensor pick-up unit that Fig. 1 the utility model is designed;
Fig. 2 is the circuit diagram of micro-control circuit in the utility model;
The circuit diagram of reference circuit in Fig. 3 the utility model;
In Fig. 4 the utility model, symmetric double polar voltages produces the circuit diagram of circuit;
The circuit diagram of the ac-excited signal generating circuit of Fig. 5 the utility model medium-high frequency;
The circuit diagram of power amplification circuit in Fig. 6 the utility model;
Fig. 7 is the structural drawing of impedance type moisture sensor;
The circuit diagram of true rms circuit in Fig. 8 the utility model;
The circuit diagram of discharge circuit in Fig. 9 the utility model.
Embodiment
embodiment 1
As shown in Figure 1, a kind of impedance type moisture sensor pumping signal generation device that the present embodiment provides, comprise that reference circuit, symmetric double polar voltages produce circuit, high-frequency AC excitation signal produces circuit, power amplification circuit, discharge circuit, true rms circuit and micro-control circuit, wherein:
The output terminal connected symmetrical dendrimer bipolar voltage of reference circuit produces the input end of circuit, the output terminal that symmetric double polar voltages produces circuit connects the input end that high-frequency AC excitation signal produces circuit, high-frequency AC excitation signal produces the input end of the output terminal connection power amplification circuit of circuit, and the output terminal of power amplification circuit connects the input end of discharge circuit;
The output terminal of discharge circuit connects the positive energize electrode of impedance type moisture sensor, the negative energize electrode of impedance type moisture sensor connects in analog, the positive and negative potential electrode of impedance type moisture sensor connects the input end of true rms circuit, and the output terminal of true rms circuit connects the input end of micro-control circuit;
The output terminal of micro-control circuit connects respectively the input end that high-frequency AC excitation signal produces circuit and discharge circuit.
Fig. 2 is the circuit diagram of micro-control circuit, and the chip of selecting is that MSP430F2111 is U1, also comprises by resistance electric capacity, the reset circuit that diode forms;
Fig. 3 is the circuit diagram of reference circuit, by REF3140-4.096 chip, is mainly that U2 and electric capacity form;
Fig. 4 is the circuit diagram that symmetric double polar voltages produces circuit, and mainly by three LM358 amplifiers, U3, U4A, U4B and electric capacity and resistance form;
Fig. 5 is the circuit diagram that high-frequency AC excitation signal produces circuit, by the multinomial analog switch of MAX4051AESE, is mainly that U5, electric capacity and resistance form;
Fig. 6 is the circuit diagram of power amplification circuit, by OPA551FA power amplifier, is mainly that U6, electric capacity and resistance form;
Fig. 8 is the circuit diagram of true rms circuit, by AD620AR-S08 instrument amplifier, is mainly that U7, effective value chip AD637BR are that U8, resistance and electric capacity etc. form;
Fig. 9 is the circuit diagram of discharge circuit, mainly resistance, diode, relay and triode, consists of;
The high frequency control port of MSP430F2111 chip is connected with the ADDA end of the multinomial analog switch of MAX4051AESE in Fig. 5, and micro-control circuit regularly produces interruption, controls high-frequency AC excitation signal and produces the adjustable symmetric double polar voltages signal of circuit generation frequency; The control of discharge port of MSP430F2111 chip is connected with R14 with R13 in Fig. 9 respectively, controlled discharge circuit timing discharging;
The control of discharge port of MSP430F2111 chip is connected with R14 with R13 in Fig. 9 respectively, when the control of discharge port of MSP430F2111 chip is exported a high level, triode Q1 conducting, relay power adhesive by reed with join in analog, now the exciting electrode of impedance type moisture sensor anodal with negative pole short circuit, realize unnecessary charge discharge, when the control of discharge port of MSP430F2111 chip is exported a low level, triode Q1 blocks relay electric-loss, reed rebounds, and now exciting electrode is normally worked;
REF3140-4.096 chip input AVDD is 5V voltage, and after REF3140-4.096 chip is processed, by Vout end output reference voltage, magnitude of voltage is 4.096v;
The REF-IN end of reference voltage access U3, forms voltage follower circuit, follows the positive input terminal that voltage directly accesses U4A, accesses the negative input end of U4B after a resistance again, and U4B is by the voltage of REF-OUT (+) output+4.096v; And U4A is by the voltage of REF-OUT (-) output-4.096v, final produce ± 4.096v voltage receives respectively X0 and the X1 end of the multinomial analog switch of MAX4051AESE in Fig. 5;
The high frequency control port of MSP430F2111 chip is connected with the ADDA end of the multinomial analog switch of MAX4051AESE in Fig. 5, the high frequency control port output look-at-me of MSP430F2111 chip, the multinomial analog switch of MAX4051AESE is according to the bipolar voltage of the different output of the frequency of look-at-me different frequency, and hold by Excitation Signal the positive input terminal that outputs to the OPA551FA power amplifier in Fig. 6, after power amplification, the positive and negative 4.096v driving voltage replacing of stable output is to the exciting electrode two ends of impedance type moisture sensor, when fluid is when flowing through in sensor, potential electrode two ends produce output voltage signal,
The positive-negative input end that above-mentioned voltage signal accesses respectively AD620AR-S08 instrument amplifier is converted to unipolarity voltage signal over the ground, and input to the Vin end of AD637BR chip, through effective value, process by Signal (out) the end output direct current effective value voltage signal relevant with water percentage to micro-control circuit.
In addition to the implementation, the utility model can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (1)
1. an impedance type moisture sensor pick-up unit, it is characterized in that, comprise that reference circuit, symmetric double polar voltages produce circuit, high-frequency AC excitation signal produces circuit, power amplification circuit, discharge circuit, true rms circuit and micro-control circuit, wherein:
The output terminal connected symmetrical dendrimer bipolar voltage of described reference circuit produces the input end of circuit, the output terminal that described symmetric double polar voltages produces circuit connects the input end that high-frequency AC excitation signal produces circuit, described high-frequency AC excitation signal produces the input end of the output terminal connection power amplification circuit of circuit, and the output terminal of described power amplification circuit connects the input end of discharge circuit;
The output terminal of described discharge circuit connects the positive energize electrode of impedance type moisture sensor, the negative energize electrode of impedance type moisture sensor connects in analog, the positive and negative potential electrode of described impedance type moisture sensor connects the input end of true rms circuit, and the output terminal of described true rms circuit connects the input end of micro-control circuit;
The output terminal of described micro-control circuit connects respectively the input end that high-frequency AC excitation signal produces circuit and discharge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007409.1U CN203720131U (en) | 2014-01-06 | 2014-01-06 | Detecting device for impedance type moisture content sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420007409.1U CN203720131U (en) | 2014-01-06 | 2014-01-06 | Detecting device for impedance type moisture content sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203720131U true CN203720131U (en) | 2014-07-16 |
Family
ID=51159272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420007409.1U Expired - Fee Related CN203720131U (en) | 2014-01-06 | 2014-01-06 | Detecting device for impedance type moisture content sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203720131U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114829984A (en) * | 2019-12-09 | 2022-07-29 | 麦格塞兹Ff有限责任公司 | Measuring hydrophone channel impedance |
-
2014
- 2014-01-06 CN CN201420007409.1U patent/CN203720131U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114829984A (en) * | 2019-12-09 | 2022-07-29 | 麦格塞兹Ff有限责任公司 | Measuring hydrophone channel impedance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202177668U (en) | Experiment instrument for directly measuring electrostatic field | |
| CN202511939U (en) | Signal conditioning circuit of 0-5V output pressure sensor | |
| CN103383407B (en) | High-common-mode-rejection battery pack voltage sampling circuit | |
| CN203720131U (en) | Detecting device for impedance type moisture content sensor | |
| CN103163359B (en) | A kind of super capacitor monomer voltage sampled measurements circuit | |
| CN103713021B (en) | Impedance type moisture sensor detection method and pick-up unit | |
| CN204009646U (en) | A kind of regulated power supply continuous current controller | |
| CN202171609U (en) | Current induction detection circuit | |
| CN203414136U (en) | Liquid-level sensor circuit | |
| CN101782543A (en) | Method for measuring pure water conductivity | |
| CN103487630A (en) | High-end sampling battery voltage circuit | |
| CN203465349U (en) | Micro-power-consumption detection circuit based on sensitive resistor | |
| CN204202773U (en) | A kind of high-frequency and high-voltage power supply temperature sensing circuit | |
| CN202471837U (en) | A battery internal resistance measuring circuit | |
| CN204302358U (en) | A kind of big current Hall element | |
| CN204287456U (en) | A kind of Novel magnetic field sensor | |
| CN103728351A (en) | Novel soil moisture sensor | |
| CN202794291U (en) | Simple circuit for measuring single cell voltages of series battery containing any number of cells | |
| CN203489998U (en) | Temperature measurement circuit for water treatment | |
| CN203204078U (en) | Test system for measuring earth grounding resistance | |
| CN204116438U (en) | Monomer battery voltage measurement circuit in a kind of novel battery group | |
| CN203310900U (en) | Current detection circuit for DC motor | |
| CN203504144U (en) | Electric leakage sampling circuit | |
| CN202710763U (en) | Information sensing device of tipping bucket rain gauge | |
| CN204028156U (en) | A kind of inductive current change-over circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 |