CN108426519A - A kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument - Google Patents
A kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument Download PDFInfo
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- CN108426519A CN108426519A CN201810296212.7A CN201810296212A CN108426519A CN 108426519 A CN108426519 A CN 108426519A CN 201810296212 A CN201810296212 A CN 201810296212A CN 108426519 A CN108426519 A CN 108426519A
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- lithium battery
- resistance
- coating layer
- layer thickness
- temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
- G01B7/085—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means for measuring thickness of coating
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of paint coating thickness based on temperature-compensation circuit to accurately measure instrument, solves the problem of the big error that the prior art measures, inefficiency and cannot be protected the lithium battery of its inside so as to shorten lithium battery service life.The present invention includes measuring instrument main body, microprocessor, liquid crystal display, USB interface; interface is measured, coating layer thickness acquires plug, and coating layer thickness acquires line; coating layer thickness acquisition probe, lithium battery, lithium battery charging interface, lithium battery low voltage protection circuit and temperature-compensation circuit.The configuration of the present invention is simple, design is scientific and reasonable, easy to use, and the accuracy of measurement is high, and error is small, and measurement efficiency is high, and can carry out effective protection to the lithium battery of its inside, so as to effectively extend the service life of lithium battery.
Description
Technical field
The present invention relates to a kind of paint coating thickness based on temperature-compensation circuit to accurately measure instrument.
Background technology
In general, coating be to be coated in coated article part surface and can be formed firm attachment continuous film material
Material, it is either inorganic, such as electro-coppering, electronickelling, electrogalvanizing etc., can also be it is organic, it is such as most of organic high
Molecular material, high-molecular organic material constitute current Coating Market major part, and coating is blocked up during coating to be easy
It causes to waste, reducing painting film toughness makes coating be easy cracking, and the paint coating thickness measuring instrument of the prior art is single
Inductor is controlled with the experience of operator and is operated, and is unable to get feedback information when operation entirely, thus cannot be guaranteed operator's
The correctness of operations, the case where such as encountering operation error, can not trace correction, lead to that the accuracy measured is low, efficiency is low
Under, while being generally required using accumulator in paint coating thickness measuring instrument, lithium battery is one kind by lithium metal or lithium alloy
For negative material, use the battery of non-aqueous electrolytic solution.Due to the chemical characteristic of lithium ion battery, in normal use process
In, the internal chemical positive reaction for carrying out electric energy and being mutually converted with chemical energy, but under certain conditions, it such as will to its overdischarge
Battery can seriously be damaged after side reaction aggravation by causing inside battery that chemical side reactions occur, and influenced its performance and used the longevity
Life.Therefore, it is necessary to design under-voltage protection to lithium battery.Prior art coating layer thickness acquisition probe can generate drift because of temperature simultaneously
It moves, causes detection information not accurate, to increase measurement error.
Invention content
The technical problem to be solved by the present invention is to：A kind of paint coating thickness based on temperature-compensation circuit is provided precisely to survey
Instrument is measured, solves that the error that the prior art measures is big, inefficiency, and the lithium battery of its inside cannot be protected to contract
The problem of short lithium battery service life.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument, including measuring instrument main body, is set to described
It is man-machine for operator and microprocessor progress to be set to measuring instrument main body front for microprocessor in measuring instrument main body
The liquid crystal display that interaction and metrical information show and be electrically connected with the microprocessor is set to measuring instrument main body one end
And the USB interface being electrically connected with the microprocessor, it is set to the measurement interface of the measuring instrument main body other end, with the survey
The coating layer thickness acquisition plug that amount interface matches, the coating layer thickness that one end is connect with coating layer thickness acquisition plug, which acquires, to be connected
Line is connected to the coating layer thickness acquisition probe of the coating layer thickness acquisition line other end, is set in the measuring instrument main body simultaneously
The lithium battery being electrically connected with the microprocessor, and electrically connect set on the measuring instrument body side and with the lithium battery
The lithium battery charging interface connect；Temperature-compensation circuit, the temperature-compensation circuit are connected in the coating layer thickness acquisition probe
Including first resistor R3, second resistance R4,3rd resistor R5, potentiometer WZ, post-amplifier U1 and as temperature-compensating
Diode D1, the cathode interface of the coating layer thickness acquisition probe are connect with the first resistor R3 and potentiometer WZ being serially connected,
The anode interface of the coating layer thickness acquisition probe is connect with second resistance R4 parallel with one another and 3rd resistor R5, and described two
Pole pipe D1 connects with the second resistance R4, the in-phase input end of the post-amplifier U1 and the coating layer thickness acquisition probe
Connection, the inverting input of the post-amplifier U1 are connect with the potentiometer WZ and the second resistance R4, the rear class
The output end of amplifier U1 is connect with filter circuit；
The lithium battery low voltage protection circuit being connect with the lithium battery, the lithium battery are equipped in the measuring instrument main body
Low voltage protection circuit include capacitance C1, capacitance C2, capacitance C3, metal-oxide half field effect transistor V1, metal-oxide half field effect transistor V2,
The control IC of diode D1, diode D2 and model R7421, and the capacitance C1 connections lithium battery control IC pins
VDD is connected between C1 and the lithium battery, and capacitance C2 mono- terminates the lithium battery, and another termination controls IC pin V-, capacitance
C3 mono- terminates the lithium battery, and another termination control IC pin Ct, metal-oxide half field effect transistor V1 connect the lithium battery, control simultaneously
IC pins Do and metal-oxide half field effect transistor V2 processed, metal-oxide half field effect transistor V2 connect control IC pin Co, diode D1 with
Metal-oxide half field effect transistor V1 is in parallel, and diode D2 is in parallel with metal-oxide half field effect transistor V2, and control IC pins VSS connects the lithium
Battery.
Further, the model of described metal-oxide half field effect transistor V1, V2 are SI9926, the low voltage protection circuit
Further include resistance R1, a termination control IC pins V-, another termination lithium battery of a termination lithium battery, another termination capacitor C1
Resistance R2, and the fuse FUSE that is connect with lithium battery.
Further, the material of the diode D1 is silicon.
Further, the temperature-compensation circuit further includes the 4th resistance R6, the 5th resistance R7, the 6th resistance R8, described
4th resistance R6 is connected between the coating layer thickness acquisition probe and the in-phase input end of the post-amplifier U1, and described
Five resistance R7 are connected between potentiometer WZ, second resistance R4 and the inverting input of post-amplifier U1, the 6th resistance
The both ends of R8 are connect with the inverting input of the output end of the post-amplifier U1 and the post-amplifier U1 respectively.
Further, the microprocessor is Intel Xeon E5-2698v3 microprocessors.
Compared with prior art, the invention has the advantages that：
(1) the configuration of the present invention is simple, design is scientific and reasonable, easy to use, the accuracy of measurement is high, and error is small, measures effect
Rate is high, and can carry out effective protection to the lithium battery of its inside, so as to effectively extend the service life of lithium battery.
(2) present invention is measured by setting microprocessor, liquid crystal display, USB interface in measuring instrument main body and measuring interface
Interface connection coating layer thickness acquisition plug, coating layer thickness acquisition line and coating layer thickness acquisition probe, operator pass through liquid crystal
Display screen carries out human-computer interaction with microprocessor, and to assign operational order, coating layer thickness acquisition probe acquires paint coatings thickness in real time
Information is spent, and the collected information of institute is acquired into line by coating layer thickness and is sent to microprocessor, microprocessor is to being received
To information carry out store and shown by liquid crystal display, operator can be got information about by liquid crystal display
The thickness of paint coatings, to prevent the detection information of mistake, while measurement efficiency height is high.
(3) present invention can be crossed in lithium battery and be put by connecting a lithium battery low voltage protection circuit on lithium battery
It is effectively protected in electric process, it is ensured that lithium battery does not cause battery to be damaged because voltage is low, and then extends it
Service life reduces use cost.
(4) present invention is connected with temperature-compensation circuit in coating layer thickness acquisition probe, can effectively eliminate coating layer thickness and adopt
The influence of collection probe temperature drift so that metrical information is more accurate, so as to effectively reduce measurement error, ensures the present invention's
Measurement accuracy.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the circuit diagram of lithium battery low voltage protection circuit of the present invention.
Fig. 3 is the circuit diagram of temperature-compensation circuit of the present invention.
Fig. 4 is that each electronic component of the present invention connects block diagram.
Wherein, reference numeral is corresponding entitled：
1- measuring instruments main body, 2- microprocessors, 3- liquid crystal displays, 4-USB interfaces, 5- measure interface, 6- coating layer thicknesses
Acquire plug, 7- coating layer thicknesses acquisition line, 8- coating layer thicknesses acquisition probe, 9- lithium batteries, 10- lithium battery charging interfaces.
Specific implementation mode
The invention will be further described with embodiment for explanation below in conjunction with the accompanying drawings, and mode of the invention includes but not only limits
In following embodiment.
As shown in Figs 1-4, a kind of paint coating thickness based on temperature-compensation circuit provided by the invention accurately measures instrument,
It is simple in structure, design is scientific and reasonable, easy to use, the accuracy of measurement is high, and error is small, and measurement efficiency is high, and to its inside
Lithium battery can carry out effective protection, so as to effectively extend the service life of lithium battery.The present invention includes measuring instrument main body 1,
Microprocessor 2 in the measuring instrument main body 1 is set to 1 front of the measuring instrument main body for operator and micro- place
The liquid crystal display 3 that reason device 2 carries out human-computer interaction and metrical information shows and is electrically connected with the microprocessor 2, is set to institute
It is another to be set to the measuring instrument main body 1 for the USB interface 4 stated 1 one end of measuring instrument main body and be electrically connected with the microprocessor 2
The measurement interface 5 at end, the coating layer thickness to match with the measurement interface 5 acquire plug 6, and one end is acquired with the coating layer thickness
The coating layer thickness that plug 6 connects acquires line 7, is connected to the coating layer thickness acquisition of coating layer thickness acquisition 7 other end of line
Probe 8, the lithium battery 9 for being set in the measuring instrument main body 1 and being electrically connected with the microprocessor 2, and it is set to the survey
The lithium battery charging interface 10 measured 1 side of instrument main body and be electrically connected with the lithium battery 9, the microprocessor 2 are Intel
Xeon E5-2698v3 microprocessors.
By setting microprocessor, liquid crystal display, USB interface in measuring instrument main body and measuring interface, measurement connects the present invention
Mouth connection coating layer thickness acquisition plug, coating layer thickness acquisition line and coating layer thickness acquisition probe, operator pass through liquid crystal display
Screen carries out human-computer interaction with microprocessor, and to assign operational order, coating layer thickness acquisition probe acquires paint coating thickness in real time
Information, and the collected information of institute is acquired into line by coating layer thickness and is sent to microprocessor, microprocessor is to received
Information carry out store and shown by liquid crystal display, operator can get information about painting by liquid crystal display
The thickness for expecting coating, to prevent the detection information of mistake, while measurement efficiency height is high.
Temperature-compensation circuit is connected in coating layer thickness acquisition probe 8 of the present invention, the temperature-compensation circuit includes
First resistor R3, second resistance R4,3rd resistor R5, potentiometer WZ, post-amplifier U1 and two poles as temperature-compensating
Pipe D1, the cathode interface of the coating layer thickness acquisition probe 8 is connect with the first resistor R3 and potentiometer WZ being serially connected, described
The anode interface of coating layer thickness acquisition probe 8 is connect with second resistance R4 parallel with one another and 3rd resistor R5, two pole
Pipe D1 connects with the second resistance R4, the in-phase input end of the post-amplifier U1 and the coating layer thickness acquisition probe 8
Connection, the inverting input of the post-amplifier U1 are connect with the potentiometer WZ and the second resistance R4, the rear class
The output end of amplifier U1 is connect with filter circuit.
Temperature-compensation circuit of the present invention further includes the 4th resistance R6, the 5th resistance R7, the 6th resistance R8, and the described 4th
Resistance R6 is connected between the coating layer thickness acquisition probe 8 and the in-phase input end of the post-amplifier U1, and the described 5th
Resistance R7 is connected between potentiometer WZ, second resistance R4 and the inverting input of post-amplifier U1, the 6th resistance R8
Both ends connect respectively with the inverting input of the output end of the post-amplifier U1 and the post-amplifier U1.
The present invention is connected with temperature-compensation circuit in coating layer thickness acquisition probe, can effectively eliminate coating layer thickness acquisition and visit
The influence of head temperature drift so that metrical information is more accurate, so as to effectively reduce measurement error, ensures the measurement of the present invention
Precision.
It is equipped with the lithium battery low voltage protection circuit being connect with the lithium battery 9, institute in measuring instrument main body 1 of the present invention
It includes capacitance C1, capacitance C2, capacitance C3, metal-oxide half field effect transistor V1, OH to state lithium battery low voltage protection circuit
The control IC of transistor V2, diode D1, diode D2 and model R7421, and the capacitance C1 connections lithium battery 9,
Control IC pins VDD is connected between C1 and the lithium battery 9, and capacitance C2 mono- terminates the lithium battery 9, and another termination controls IC
Pin V-, capacitance C3 mono- terminate the lithium battery 9, and another termination control IC pin Ct, metal-oxide half field effect transistor V1 connect simultaneously
The lithium battery 9, control IC pins Do and metal-oxide half field effect transistor V2, metal-oxide half field effect transistor V2 connect control IC pins
Co, diode D1 is in parallel with metal-oxide half field effect transistor V1, and diode D2 is in parallel with metal-oxide half field effect transistor V2, and control IC draws
Foot VSS connects the lithium battery 9, and lithium battery 9 of the present invention is denoted as BT in fig. 2.
The model of metal-oxide half field effect transistor V1, V2 of the present invention are SI9926, and the low voltage protection circuit is also
Resistance R1 including a termination lithium battery 9, another termination capacitor C1, a termination control IC pins V-, another termination lithium battery 9
Resistance R2, and the material of fuse FUSE, the diode D1 being connect with lithium battery 9 is silicon.
The present invention, can be in lithium battery overdischarge by connecting a lithium battery low voltage protection circuit on lithium battery
It is effectively protected in journey, it is ensured that lithium battery does not cause battery to be damaged because voltage is low, and then extends its use
Service life reduces use cost.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit the protection model of the present invention
Enclose, as long as the present invention body design thought and that mentally makes have no the change of essential meaning or polishing, solved
The technical issues of it is still consistent with the present invention, should all be included within protection scope of the present invention.
Claims (5)
1. a kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument, it is characterised in that：Including measuring instrument main body
(1), the microprocessor (2) being set in the measuring instrument main body (1) is set to the measuring instrument main body (1) front and is used for operator
The liquid crystal for showing and being electrically connected with the microprocessor (2) with the microprocessor (2) progress human-computer interaction and metrical information
Display screen (3), the USB interface (4) for being set to described measuring instrument main body (1) one end and being electrically connected with the microprocessor (2), if
In the measurement interface (5) of measuring instrument main body (1) other end, the coating layer thickness to match with the measurement interface (5) acquires
Plug (6), the coating layer thickness acquisition line (7) that one end is connect with coating layer thickness acquisition plug (6), is connected to the coating
Thickness acquire line (7) other end coating layer thickness acquisition probe (8), be set to the measuring instrument main body (1) in and with it is described micro-
The lithium battery (9) that processor (2) is electrically connected, and it is set on measuring instrument main body (1) side and electric with the lithium battery (9)
Property connection lithium battery charging interface (10)；It is connected with temperature-compensation circuit, the temperature on the coating layer thickness acquisition probe (8)
It includes first resistor R3, second resistance R4,3rd resistor R5, potentiometer WZ, post-amplifier U1 and conduct to spend compensation circuit
The diode D1 of temperature-compensating, the cathode interface of the coating layer thickness acquisition probe (8) and the first resistor R3 that is serially connected and
Potentiometer WZ connections, the anode interface of the coating layer thickness acquisition probe (8) and second resistance R4 and third parallel with one another
Resistance R5 connections, the diode D1 connect with the second resistance R4, the in-phase input end of the post-amplifier U1 and institute
State coating layer thickness acquisition probe (8) connection, the inverting input of the post-amplifier U1 and the potentiometer WZ and described the
Two resistance R4 connections, the output end of the post-amplifier U1 are connect with filter circuit；
The lithium battery low voltage protection circuit being connect with the lithium battery (9), the lithium electricity are equipped in the measuring instrument main body (1)
Pond low voltage protection circuit includes capacitance C1, capacitance C2, capacitance C3, metal-oxide half field effect transistor V1, metal-oxide half field effect transistor
The control IC of V2, diode D1, diode D2 and model R7421, and the capacitance C1 connections lithium battery (9), control
IC pins VDD is connected between C1 and the lithium battery (9), and capacitance C2 mono- terminates the lithium battery (9), and another termination controls IC
Pin V-, capacitance C3 mono- terminate the lithium battery (9), and another termination controls IC pin Ct, and metal-oxide half field effect transistor V1 is simultaneously
Connect the lithium battery (9), control IC pins Do and metal-oxide half field effect transistor V2, metal-oxide half field effect transistor V2 meet control IC
Pin Co, diode D1 is in parallel with metal-oxide half field effect transistor V1, and diode D2 is in parallel with metal-oxide half field effect transistor V2, control
IC pins VSS connects the lithium battery (9).
2. a kind of paint coating thickness based on temperature-compensation circuit according to claim 1 accurately measures instrument, feature
It is：The model of described metal-oxide half field effect transistor V1, V2 are SI9926, and the low voltage protection circuit further includes a termination
The resistance R1 of lithium battery (9), another termination capacitor C1, a termination control IC pins V-, another resistance for terminating lithium battery (9)
R2, and the fuse FUSE that is connect with lithium battery (9).
3. a kind of paint coating thickness based on temperature-compensation circuit according to claim 2 accurately measures instrument, feature
It is：The material of the diode D1 is silicon.
4. a kind of paint coating thickness based on temperature-compensation circuit according to claim 3 accurately measures instrument, feature
It is：The temperature-compensation circuit further includes the 4th resistance R6, the 5th resistance R7, the 6th resistance R8, and the 4th resistance R6 connects
It is connected between the coating layer thickness acquisition probe (8) and the in-phase input end of the post-amplifier U1, the 5th resistance R7
It is connected between potentiometer WZ, second resistance R4 and the inverting input of post-amplifier U1, the both ends of the 6th resistance R8
It is connect respectively with the inverting input of the output end of the post-amplifier U1 and the post-amplifier U1.
5. a kind of paint coating thickness based on temperature-compensation circuit according to claim 4 accurately measures instrument, feature
It is：The microprocessor (2) is Intel Xeon E5-2698v3 microprocessors.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810296212.7A CN108426519A (en) | 2018-04-04 | 2018-04-04 | A kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument |
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| CN201810296212.7A CN108426519A (en) | 2018-04-04 | 2018-04-04 | A kind of paint coating thickness based on temperature-compensation circuit accurately measures instrument |
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| CN104266618A (en) * | 2014-09-28 | 2015-01-07 | 山东中科普锐检测技术有限公司 | Ultrasonic thickness meter based on mobile display terminal |
| CN204258279U (en) * | 2014-12-17 | 2015-04-08 | 温州凯唐电子科技有限公司 | A kind of lithium battery low voltage protection circuit |
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| CN205879100U (en) * | 2016-06-23 | 2017-01-11 | 吴江市建设工程质量检测中心有限公司 | Coating thickness meter |
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| CN106711940A (en) * | 2016-12-16 | 2017-05-24 | 山东北方光学电子有限公司 | Protection circuit used for low-light level night vision device |
| CN206862279U (en) * | 2017-07-04 | 2018-01-09 | 河南省诚建检验检测技术股份有限公司 | A kind of coating thickness detector with calibration function |
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Application publication date: 20180821 |