CN102175575B - Miniature electromagnetic induction type oil viscosity measuring device and method - Google Patents
Miniature electromagnetic induction type oil viscosity measuring device and method Download PDFInfo
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- CN102175575B CN102175575B CN201110030585A CN201110030585A CN102175575B CN 102175575 B CN102175575 B CN 102175575B CN 201110030585 A CN201110030585 A CN 201110030585A CN 201110030585 A CN201110030585 A CN 201110030585A CN 102175575 B CN102175575 B CN 102175575B
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Abstract
The invention discloses a miniature electromagnetic induction type oil viscosity measuring device and a miniature electromagnetic induction type oil viscosity measuring method. The device comprises a sensing probe, a control unit and an upper computer, wherein the control unit is connected with the sensing probe and is used for controlling the sensing probe to acquire an oil signal, and receiving and transmitting the oil signal which is acquired by the sensing probe; and the upper computer receives the oil signal which is transmitted by the control unit and analyzes and judges the received signal. The method comprises the following steps of: initializing and opening an interrupted serial port; judging whether an instruction of requesting to transmit information is present; judging whether an instruction of requesting to retransmit the information is received; calling an acquisition data function; calling a transmitting function and transmitting the completely received signal; and resetting a receiving state, and returning to the step 2 for recycle. An oil viscosity measuring system is constructed based on electromagnetic induction, a relational model between one-way movement time of a piston and the oil viscosity is established, and the oil viscosity is measured. Compared with the traditional oil viscosity measuring method, the whole measuring scheme has the advantages of simple structure, miniaturization, online measurement, adaptability to severe environment, and the like.
Description
Technical field
The present invention relates to a kind of fluid viscosity measurement mechanism.Particularly relate to a kind of miniaturized electric magnetic inductive fluid viscosity measurement mechanism and measuring method based on electromagnetic induction.
Background technology
Viscosity is an important physical amount that characterizes fluid properties, is one of important physical character and technical indicator of liquid.Various fields such as its measurement and oil, chemical industry, medical science, food and national defence are closely related, and the real-time monitoring of viscosity is helped controlling production procedure, realizes safety in production, help improving and guaranteeing product yield.Especially at petroleum chemical industry, from oil exploitation, Crude Oil Transportation all extremely need be to the real-time detection of fluid viscosity to each link of the whole process of various productions.
The viscosimeter that adopts traditional viscosity measuring method such as falling ball method, vibratory drilling method, capillary tube technique, rotary process and vibratory drilling method etc. to realize; These instruments itself are heavy; The very much not portable band of volume, and majority can only carry out the viscosity measurement and is difficult to realize real-time monitoring under laboratory condition.And external online viscosity detecting instrument costs an arm and a leg.Therefore, but to measure transposition be very necessary to the viscosity that works out a kind of low cost, on-line measurement simple in structure and can adapt to rugged surroundings, and have broad application prospects.
Summary of the invention
Technical matters to be solved by this invention is, a kind of simple in structure, low-cost and miniaturized electric magnetic inductive fluid viscosity measurement mechanism and measuring method that can on-line real time monitoring fluid viscosity be provided.
The technical scheme that the present invention adopted is: a kind of miniaturized electric magnetic inductive fluid viscosity measurement mechanism and measuring method; Miniaturized electric magnetic inductive fluid viscosity measurement mechanism; Include sensing probe; Linking to each other with sensing probe is used to control sensing probe and gathers the fluid signal, and receives and send the control module of the fluid signal that sensing probe gathers, and receives fluid signal that control module sends and the signal that is received analyzed the host computer of judgement.
Described sensing probe includes: an end is set to the probe tube wall that openend, the other end are set to flange arrangement; Be formed on the measuring chamber in the probe tube wall; Be arranged on the Y type flow deflector of the open end side of probe tube wall; And be connected the probe tube wall flange arrangement on connection cover; The openend of described probe tube wall constitutes the flow of liquid inlet of measuring chamber, is provided with the permanent magnetic piston that moves along the central shaft of measuring chamber in the described measuring chamber, and the bottom of said measuring chamber is provided with the temperature sensor that links to each other with control module; Described probe tube wall is the double-decker of the sealing that is made up of inner tubal wall and outer tube wall, between inner tubal wall and outer tube wall and around inner tubal wall, is wound with two groups of solenoids that link to each other with control module.
Described control module includes: single-chip microcomputer; The solenoid driver module that links to each other with single-chip microcomputer respectively, induced signal detection module, temperature collect module and host computer, described solenoid driver module connects two groups of solenoids and induced signal detection module respectively.
Described solenoid driver module includes the corresponding respectively two-way circuit that connects two groups of solenoids; Wherein one the tunnel has: reverser X1A, reverser X1B and the resistance R 5 of connecting successively; The input end of described reverser X1A connects the signal output part of single-chip microcomputer; The other end of described resistance R 5 connects photoelectrical coupler U4, and said photoelectrical coupler U4 connects solenoid 7 through potentiometer R6, resistance R 14, FET Q1 successively; Another road has: the reverser X1C and the resistance R 4 of contacting successively; The input end of described reverser X1C connects the signal output part of single-chip microcomputer; The other end of described resistance R 4 connects photoelectrical coupler U5, and said photoelectrical coupler U5 connects second solenoid 8 through potentiometer R7, resistance R 15, FET Q2 successively.
Described induced signal detection module includes and amplifies chip U3 and the two-way circuit that links to each other with this amplification chip U3; Wherein, the one tunnel has: constitute the potentiometer R10 of reference voltage, the end ground connection of said potentiometer R10; Another termination power; This end also connects the pin 2 that amplifies chip U3 through a resistance R 12, and the adjustable end of said potentiometer R10 connects the pin 4 that amplifies chip U3, and the pin 5 of described amplification chip U3 connects and composes the adjustable end of the potentiometer R11 of tested voltage; The end of said potentiometer R11 connects first solenoid, other end ground connection; Another road has: the potentiometer R14 that constitutes reference voltage; The end ground connection of said potentiometer R14, another termination power, this end also connect the pin 13 that amplifies chip U3 through a resistance R 13; The adjustable end of said potentiometer R14 connects the pin 10 that amplifies chip U3; The pin 11 of described amplification chip U3 connects and composes the adjustable end of the potentiometer R15 of tested voltage, and the end of said potentiometer R15 connects solenoid 8, other end ground connection.
Described temperature collect module includes: amplify chip U1 and A/D conversion chip U3; Wherein, The pin 2 of described amplification chip U1 connects an end of resistance R 1 and resistance R 3 respectively; Pin 3 connects an end of resistance R 2 and temperature sensor respectively, another termination voltage V2 of said resistance R 1 and resistance R 2, another termination voltage V2 of resistance R 3 and temperature sensor; The pin 1 of described amplification chip U1 is through potentiometer R6 connecting pin 8; Pin 7 meets power supply VCC; Pin 6 connects the pin 6 of A/D conversion chip U2, and pin 5 connects the pin 9 of A/D conversion chip U2, pin 7,8,10 ground connection of said A/D conversion chip U2; Also pass through resistance R 7 connecting pins 19 through capacitor C 1 again with pin 4, the pin 11～18 of said A/D conversion chip U2 connects single-chip microcomputers (11).
Be used for the measuring method of miniaturized electric magnetic inductive fluid viscosity measurement mechanism, include following steps:
1) initialization, and open the serial ports interruption;
2) having judged whether request transmission information instruction, is then to change accepting state into transmit status, gets into step 4 then, otherwise gets into the 3rd step;
3) judging whether to receive the instruction of request repeat, is then to change accepting state into transmit status, gets into the 5th step then, restarts otherwise return the 2nd step.
4) call the image data function;
5) call the transmission function, and complete signal is received in transmission;
6) be made as accepting state again, and return the 2nd step and circulate again.
The described image data function that calls comprises the steps:
1) initialization;
2) judge to detect excitation pulse signal and whether be in rising edge, be to get into next step after 10 seconds of time-delay, otherwise continue to judge whether detect excitation pulse signal is in rising edge;
3) judge whether detection comparator output being in to descend and prolong, be to get into next step, otherwise continue to judge whether detection comparator output being in decline and prolonging;
4) judge whether detection comparator output is overtime, be that expired times are added 1, otherwise record data also returns master routine;
5) whether judge expired times greater than 5, be that then to set overtime mark position be 1 and return master routine, continue circulation otherwise return the 1st step.
The described information of step 2 includes oil liquid temperature and piston motion cycle.
Miniaturized electric magnetic inductive fluid viscosity measurement mechanism of the present invention and measuring method have made up fluid viscosity measuring system based on electromagnetic induction, have set up the relational model of piston one way run duration and fluid viscosity, realize the measurement of fluid viscosity.But whole measurement scheme compared to traditional viscosity measuring method have simple in structure, be prone to realize the miniaturization on-line measurement, can adapt to advantage such as rugged surroundings.
Description of drawings
Fig. 1 is the inner structure synoptic diagram that the present invention pops one's head in;
Fig. 2 is the external structure synoptic diagram that the present invention pops one's head in;
Fig. 3 is the formation block diagram of control module of the present invention;
Fig. 4 is a single-chip microcomputer line schematic diagram of the present invention;
Fig. 5 is a coil driver schematic diagram of the present invention;
Fig. 6 is an induced signal testing circuit schematic diagram of the present invention;
Fig. 7 is a temperature collection circuit schematic diagram of the present invention;
Fig. 8 is a control method process flow diagram of the present invention;
Fig. 9 is the process flow diagram of image data in the control method of the present invention.
Wherein:
1:Y type flow deflector 2: measuring chamber
3: probe tube wall 4: temperature sensor
5: connection cover 6: permanent magnetic piston
7: solenoid 8: solenoid
9: flange arrangement 10: the flow of liquid inlet
11: single-chip microcomputer 12: the solenoid driver module
13: induced signal detection module 14: temperature collect module
15: host computer
Embodiment
Below in conjunction with embodiment and accompanying drawing miniaturized electric magnetic inductive fluid viscosity measurement mechanism of the present invention and measuring method are made detailed description.
Like Fig. 1, shown in 2; Miniaturized electric magnetic inductive fluid viscosity measurement mechanism of the present invention; Include sensing probe; Linking to each other with sensing probe is used to control sensing probe and gathers the fluid signal, and receives and send the control module of the fluid signal that sensing probe gathers, and receives fluid signal that control module sends and the signal that is received analyzed the host computer of judgement.
Described sensing probe includes: an end is set to the probe tube wall 3 that openend, the other end are set to flange arrangement 9, and when detecting fluid, probe tube wall 3 stretches in the pipeline fully, and flange arrangement 9 is used for being connected with pipe joint.Be formed on the measuring chamber 2 in the probe tube wall 3, be arranged on the Y type flow deflector 1 of the open end side of probe tube wall 3, the test solution that is used for flowing in the conducting tubes flows into measuring chamber 2.Be connected in addition the probe tube wall 3 flange arrangement 9 on connection cover 5; Leaded port on the connection cover 5; Draw the drive controlling line and the platinum resistance temperature sensor lead-in wire of solenoid; The openend of described probe tube wall 3 constitutes the flow of liquid inlet 10 of measuring chamber 2, is provided with the permanent magnetic piston 6 that can move along the central shaft of measuring chamber 2 in the described measuring chamber 2, and the bottom of said measuring chamber 2 is provided with the temperature sensor 4 that links to each other with control module; Described temperature sensor 4 is platinum resistance temperature sensor PT100, is used for detecting the measured oil liquid temp.Described probe tube wall 3 is double-deckers of the sealing that is made up of inner tubal wall and outer tube wall, between inner tubal wall and outer tube wall and around inner tubal wall, is wound with two groups of solenoids that link to each other with control module 7,8.
Include like the described control module of Fig. 3: single-chip microcomputer 11; The solenoid driver module 12 that links to each other with single-chip microcomputer 11 respectively, induced signal detection module 13, temperature collect module 14 and host computer 15, described solenoid driver module 12 connects two groups of solenoids 7,8 and induced signal detection module 13 respectively.
As shown in Figure 4; Described single-chip microcomputer 11 is important component parts of whole miniaturized electric magnetic inductive fluid viscosity measurement mechanism of the present invention; With the AT89C51 single-chip microcomputer is that core has been added some peripheral circuits such as compositions such as analog to digital conversion circuit, serial communication circuit, and it has mainly realized following function:
1, the duty of solenoid control;
2, coil-induced voltage obtains and comparison the one way run duration of recording and analyses;
3, measure the temperature information collection of indoor liquid;
4 and compunication, the transmission data.
As shown in Figure 5; Described solenoid driver module 12 includes the corresponding respectively two-way circuit that connects two groups of solenoids 7,8; Wherein one the tunnel has: reverser X1A, reverser X1B and the resistance R 5 of connecting successively; The input end of described reverser X1A connects the signal output part of single-chip microcomputer 11, and the other end of described resistance R 5 connects photoelectrical coupler U4, and said photoelectrical coupler U4 connects solenoid 7 through potentiometer R6, resistance R 14, FET Q1 successively; Another road has: the reverser X1C and the resistance R 4 of contacting successively; The input end of described reverser X1C connects the signal output part of single-chip microcomputer 11; The other end of described resistance R 4 connects photoelectrical coupler U5, and said photoelectrical coupler U5 connects second solenoid 8 through potentiometer R7, resistance R 15, FET Q2 successively.
The I/O mouth of single-chip microcomputer 11 is periodically exported high-low level, behind reverser, obtains the complementary signal of two-way phase differential 180 degree, and they are through the conducting state of photoelectrical coupler TLP521 output voltage pressure drop control FET.Photoelectrical coupler is realized the electrical isolation of input end and output terminal here, and cutting off the output signal influences input signal, improves the antijamming capability of circuit.The control of FET conducting state has in fact just realized the control of solenoid duty.When one road FET conducting wherein, this road solenoid is in running order to provide driving force to impel it to move to the other end to permanent magnetic piston; Another road FET is in cut-off state simultaneously, and this road solenoid does not provide driving force to piston, only to being monitored by permanent magnetic piston caused by movement induced voltage.
As shown in Figure 6, described induced signal detection module 13 includes and amplifies chip U3 and the two-way circuit that links to each other with this amplification chip U3, wherein; One the tunnel has: the potentiometer R10 that constitutes reference voltage; The end ground connection of said potentiometer R10, another termination power, this end also connect the pin 2 that amplifies chip U3 through a resistance R 12; The adjustable end of said potentiometer R10 connects the pin 4 that amplifies chip U3; The pin 5 of described amplification chip U3 connects and composes the adjustable end of the potentiometer R11 of tested voltage, and the end of said potentiometer R11 connects first solenoid 7, other end ground connection; Another road has: the potentiometer R14 that constitutes reference voltage; The end ground connection of said potentiometer R14, another termination power, this end also connect the pin 13 that amplifies chip U3 through a resistance R 13; The adjustable end of said potentiometer R14 connects the pin 10 that amplifies chip U3; The pin 11 of described amplification chip U3 connects and composes the adjustable end of the potentiometer R15 of tested voltage, and the end of said potentiometer R15 connects solenoid 8, other end ground connection.
Obtain comparison through induced voltage, record permanent magnetic piston one way run duration.Permanent magnetic piston under solenoid driving force alternating action, to-and-fro movement in measuring chamber.Solenoid causes magnetic flux change to produce induction electromotive force because of receiving the permanent magnetic piston motion.The induced voltage of solenoid produces at once during from the permanent magnetic piston setting in motion with its motion and stops and disappearing, and its induced voltage life period is the direct reaction of piston motion time.We adopt comparator circuit that the coil voltage that driving force wouldn't be provided is monitored; Compare with a certain reference voltage; The pulse signal of output record permanent magnetic piston one way run duration passes to single-chip microcomputer; Single-chip microcomputer adopts timer to calculate the burst length, has also just obtained the one way run duration of permanent magnetic piston.Its middle port checkv1, checkv2 are the input of solenoid voltage, and network label P3.2, P3.3 go between for the pulse of input single-chip microcomputer.
As shown in Figure 7; Described temperature collect module 14 includes: amplify chip U1 and A/D conversion chip U3; Wherein, the pin 2 of described amplification chip U1 connects an end of resistance R 1 and resistance R 3 respectively, and pin 3 connects an end of resistance R 2 and temperature sensor 4 respectively; Another termination voltage V2 of said resistance R 1 and resistance R 2, another termination voltage V2 of resistance R 3 and temperature sensor 4; The pin 1 of described amplification chip U1 is through potentiometer R6 connecting pin 8; Pin 7 meets power supply VCC; Pin 6 connects the pin 6 of A/D conversion chip U2, and pin 5 connects the pin 9 of A/D conversion chip U2, pin 7,8,10 ground connection of said A/D conversion chip U2; Also pass through resistance R 7 connecting pins 19 through capacitor C 1 again with pin 4, the pin 11～18 of said A/D conversion chip U2 connects single-chip microcomputers 11.
Because fluid viscosity and temperature physical quantity are closely related, need obtain the interior fluid temperature information of measuring chamber in real time to recording the k value compensation of advancing.The present invention is used for the perception fluid temperature and changes at the inner platinum temperature sensor PT100 that installs of probe; Adopt bridge diagram to realize the small change in resistance of PT100 is transformed voltage signal then; Amplify back input analog-to-digital converter ADC0804 through amplifying chip AD620 again; Last analog to digital converter ADC0804 will import simulating signal and be converted into digital signal and export to single-chip microcomputer, so realize the information acquisition of measuring chamber fluid temperature.
Be single-chip microcomputer and at last as the message exchange between the computing machine of host computer; Because only being responsible for information acquisition, single-chip microcomputer comprises collection of measuring chamber fluid temperature and permanent magnetic piston one way operating time log; The calculating of concrete k value and compensation then realize through computer software, communicate by letter so need set up with intercomputer at single-chip microcomputer.Adopt serial communication RS232 to realize data transmission among the present invention, baud rate is set to 9600bps.
As shown in Figure 8, the measuring method that is used for miniaturized electric magnetic inductive fluid viscosity measurement mechanism of the present invention includes following steps:
1) initialization, and open the serial ports interruption;
2) having judged whether request transmission information instruction, is then to change accepting state into transmit status, gets into step 4 then, otherwise gets into the 3rd step, and wherein said information includes oil liquid temperature and piston motion cycle;
3) judging whether to receive the instruction of request repeat, is then to change accepting state into transmit status, gets into the 5th step then, restarts otherwise return the 2nd step.
4) call the image data function;
5) call the transmission function, and complete signal is received in transmission;
6) be made as accepting state again, and return the 2nd step and circulate again.
As shown in Figure 9, the described image data function that calls of step 4 comprises the steps:
1) initialization;
2) judge to detect excitation pulse signal and whether be in rising edge, be to get into next step after 10 seconds of time-delay, otherwise continue to judge whether detect excitation pulse signal is in rising edge;
3) judge whether detection comparator output being in to descend and prolong, be to get into next step, otherwise continue to judge whether detection comparator output being in decline and prolonging;
4) judge whether detection comparator output is overtime, be that expired times are added 1, otherwise record data also returns master routine;
5) whether judge expired times greater than 5, be that then to set overtime mark position be 1 and return master routine, continue circulation otherwise return the 1st step.
The effect of host computer of the present invention (computing machine) is:
1, is responsible for receiving measuring chamber fluid temperature information and permanent magnetic piston one way information working time that sends over by single-chip microcomputer;
2, calculate the liquid viscosity value in real time according to piston working time and the liquid viscosity relational model set up, and compensate according to the test solution temperature information of gathering;
3, the temperature and the viscosity information of record and demonstration liquid.
This computer software is developed based on virtual instrument IDE Labwindows/CVI; Effectively utilize the powerful data-handling capacity of computing machine; Realize analyzing and processing, storage and the Presentation Function of data through software, make that total system makes up easily, flexible function, simple operation, be easy to expansion.
Claims (8)
1. miniaturized electric magnetic inductive fluid viscosity measurement mechanism; It is characterized in that: include sensing probe; Link to each other with sensing probe and to be used to control sensing probe and to gather the fluid signal, and receive and send the control module of the fluid signal that sensing probe gathers; And receive fluid signal that control module sends and the signal that is received analyzed the host computer of judgement; Described sensing probe includes: an end is set to the probe tube wall (3) that openend, the other end are set to flange arrangement (9); Be formed on the measuring chamber (2) in the probe tube wall (3); Be arranged on the Y type flow deflector (1) of open end side of probe tube wall (3), and be connected the connection cover (5) on the flange arrangement (9) of probe tube wall (3), the openend of described probe tube wall (3) constitutes the flow of liquid inlet (10) of measuring chamber (2); Be provided with the permanent magnetic piston (6) that moves along the central shaft of measuring chamber (2) in the described measuring chamber (2); The bottom of said measuring chamber (2) is provided with the temperature sensor (4) that links to each other with control module, and described probe tube wall (3) is the double-decker of the sealing that is made up of inner tubal wall and outer tube wall, between inner tubal wall and outer tube wall and around inner tubal wall, is wound with two groups of solenoids that link to each other with control module (7,8).
2. miniaturized electric magnetic inductive fluid viscosity measurement mechanism according to claim 1; It is characterized in that; Described control module includes: single-chip microcomputer (11); The solenoid driver module (12) that links to each other with single-chip microcomputer (11) respectively, induced signal detection module (13), temperature collect module (14) and host computer (15), described solenoid driver module (12) connect two groups of solenoids (7,8) and induced signal detection module (13) respectively.
3. miniaturized electric magnetic inductive fluid viscosity measurement mechanism according to claim 2; It is characterized in that; Described solenoid driver module (12) includes the corresponding respectively two-way circuit that connects two groups of solenoids (7,8); Wherein one the tunnel has: reverser X1A, reverser X1B and the resistance R 5 of connecting successively; The input end of described reverser X1A connects the signal output part of single-chip microcomputer (11), and the other end of described resistance R 5 connects photoelectrical coupler U4, and said photoelectrical coupler U4 connects first solenoid (7) through potentiometer R6, resistance R 14, FET Q1 successively; Another road has: the reverser X1C and the resistance R 4 of contacting successively; The input end of described reverser X1C connects the signal output part of single-chip microcomputer (11); The other end of described resistance R 4 connects photoelectrical coupler U5, and said photoelectrical coupler U5 connects second solenoid (8) through potentiometer R7, resistance R 15, FET Q2 successively.
4. miniaturized electric magnetic inductive fluid viscosity measurement mechanism according to claim 2; It is characterized in that described induced signal detection module (13) includes and amplifies chip U3 and the two-way circuit that links to each other with this amplification chip U3, wherein; One the tunnel has: the potentiometer R10 that constitutes reference voltage; The end ground connection of said potentiometer R10, another termination power, this end also connect the pin 2 that amplifies chip U3 through a resistance R 12; The adjustable end of said potentiometer R10 connects the pin 4 that amplifies chip U3; The pin 5 of described amplification chip U3 connects and composes the adjustable end of the potentiometer R11 of tested voltage, and the end of said potentiometer R11 connects first solenoid (7), other end ground connection; Another road has: the potentiometer R14 that constitutes reference voltage; The end ground connection of said potentiometer R14, another termination power, this end also connect the pin 13 that amplifies chip U3 through a resistance R 13; The adjustable end of said potentiometer R14 connects the pin 10 that amplifies chip U3; The pin 11 of described amplification chip U3 connects and composes the adjustable end of the potentiometer R15 of tested voltage, and the end of said potentiometer R15 connects second solenoid (8), other end ground connection.
5. miniaturized electric magnetic inductive fluid viscosity measurement mechanism according to claim 2; It is characterized in that described temperature collect module (14) includes: amplify chip U1 and A/D conversion chip U2, wherein; The pin 2 of described amplification chip U1 connects an end of resistance R 1 and resistance R 3 respectively; Pin 3 connects an end of resistance R 2 and temperature sensor (4) respectively, another termination voltage V2 of said resistance R 1 and resistance R 2, another termination voltage V2 of resistance R 3 and temperature sensor (4); The pin 1 of described amplification chip U1 is through potentiometer R6 connecting pin 8; Pin 7 meets power supply VCC; Pin 6 connects the pin 6 of A/D conversion chip U2, and pin 5 connects the pin 9 of A/D conversion chip U2, pin 7,8,10 ground connection of said A/D conversion chip U2; Also pass through resistance R 7 connecting pins 19 through capacitor C 1 again with pin 4, the pin 11～18 of said A/D conversion chip U2 connects single-chip microcomputers (11).
6. measuring method that is used for the described miniaturized electric magnetic inductive of claim 1 fluid viscosity measurement mechanism, its spy is, includes following steps:
1) initialization, and open the serial ports interruption;
2) having judged whether request transmission information instruction, is then to change accepting state into transmit status, gets into step 4 then, otherwise gets into the 3rd step;
3) judging whether to receive the instruction of request repeat, is then to change accepting state into transmit status, gets into the 5th step then, restarts otherwise return the 2nd step;
4) call the image data function;
5) call the transmission function, and complete signal is received in transmission;
6) be made as accepting state again, and return the 2nd step and circulate again.
7. the measuring method that is used for miniaturized electric magnetic inductive fluid viscosity measurement mechanism according to claim 6, its spy is that the described image data function that calls comprises the steps:
1) initialization;
2) judge to detect excitation pulse signal and whether be in rising edge, be to get into next step after 10 seconds of time-delay, otherwise continue to judge whether detect excitation pulse signal is in rising edge;
3) judge whether detection comparator output is in negative edge, is to get into next step, otherwise continue to judge whether detection comparator output is in negative edge;
4) judge whether detection comparator output is overtime, be that expired times are added 1, otherwise record data also returns master routine;
5) whether judge expired times greater than 5, be that then to set overtime mark position be 1 and return master routine, continue circulation otherwise return the 1st step.
8. the measuring method that is used for miniaturized electric magnetic inductive fluid viscosity measurement mechanism according to claim 6, its spy is that the described information of step 2 includes oil liquid temperature and piston motion cycle.
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| CN201110030585A CN102175575B (en) | 2011-01-28 | 2011-01-28 | Miniature electromagnetic induction type oil viscosity measuring device and method |
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| CN201110030585A CN102175575B (en) | 2011-01-28 | 2011-01-28 | Miniature electromagnetic induction type oil viscosity measuring device and method |
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| CN109030288B (en) * | 2018-09-17 | 2020-08-04 | 东北大学 | Electromagnetic induction timing door |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069337A (en) * | 1991-07-23 | 1993-02-24 | Vaf仪器有限公司 | Viscosity meter |
| US5317908A (en) * | 1992-04-28 | 1994-06-07 | National Metal Refining Company, Inc. | High viscosity transducer for vibratory viscometer |
| CN2315563Y (en) * | 1998-04-10 | 1999-04-21 | 中国石油化工总公司 | Vibrative on-line viscosity transmitter |
| CN2816796Y (en) * | 2005-09-13 | 2006-09-13 | 上海大学 | Apparatus for measuring rheological property of semi-solid metal |
| CN101246109A (en) * | 2008-03-25 | 2008-08-20 | 中国人民解放军国防科学技术大学 | Magnetorheological polishing solution rheology testing device |
-
2011
- 2011-01-28 CN CN201110030585A patent/CN102175575B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069337A (en) * | 1991-07-23 | 1993-02-24 | Vaf仪器有限公司 | Viscosity meter |
| US5317908A (en) * | 1992-04-28 | 1994-06-07 | National Metal Refining Company, Inc. | High viscosity transducer for vibratory viscometer |
| CN2315563Y (en) * | 1998-04-10 | 1999-04-21 | 中国石油化工总公司 | Vibrative on-line viscosity transmitter |
| CN2816796Y (en) * | 2005-09-13 | 2006-09-13 | 上海大学 | Apparatus for measuring rheological property of semi-solid metal |
| CN101246109A (en) * | 2008-03-25 | 2008-08-20 | 中国人民解放军国防科学技术大学 | Magnetorheological polishing solution rheology testing device |
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