CN106017384B - A kind of calibrator with heat-resisting property - Google Patents
A kind of calibrator with heat-resisting property Download PDFInfo
- Publication number
- CN106017384B CN106017384B CN201610531639.1A CN201610531639A CN106017384B CN 106017384 B CN106017384 B CN 106017384B CN 201610531639 A CN201610531639 A CN 201610531639A CN 106017384 B CN106017384 B CN 106017384B
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- processor
- capacitor
- resistance
- chip
- calibrator
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The present invention provides a kind of calibrators with heat-resisting property, including AD549 processor, first resistor, first capacitor, second resistance, the second capacitor, AD694 chip, the 4th resistance and controller；It is connected between the non-inverting input terminal and output end of the AD549 processor after the first resistor and first capacitor are in parallel；After second resistance and the series connection of the second capacitor, one end is connect with the output end of the AD549 processor, other end ground connection；The output end of the AD549 processor is connect with the signal input part of AD694 chip, the signal output end of AD694 chip input controller after the 4th resistance.Calibrator of the present invention with heat-resisting property, using the feedback system of RC mode, amplify the collected voltage signal of Acquisition Circuit by AD549 processor, and voltage signal is converted by current signal input controller by AD694 chip and is shown, the biasing zeroing circuit in former AD549 processor peripheral circuit containing potentiometer is eliminated, the influence caused by influence of the high temperature to potentiometer resistance to AD549 output voltage is avoided.
Description
Technical field
The invention belongs to calibrator adjustment circuit technical fields, more particularly, to a kind of calibrator with heat-resisting property.
Background technique
In original calibrator, as shown in Figure 1, the output end of the micro voltage amplifying circuit through AD549 processor is equipped with one
A biasing zeroing circuit containing potentiometer, to return to zero convenient for calibrator, so that the measurement of the micro voltage amplifying circuit
Be worth more accurate, but calibrator needs work at high temperature sometimes, and at high temperature, the resistance of potentiometer varied with temperature compared with
Big resistance difference, this just has larger impact to the accuracy of the micro voltage amplifying circuit through AD549 processor, so that calibrator
Being easy display fluctuation causes measured value inaccurate.
Summary of the invention
In view of this, the present invention is directed to propose a kind of calibrator with heat-resisting property, directlys adopt RC mode and carries out instead
The design of current feed circuit reduces the zero of calibrator and floats and error, improves the stability of calibrator, extends being applicable in for calibrator
Service life.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of calibrator with heat-resisting property, including AD549 processor, first resistor, first capacitor, second resistance,
Second capacitor, AD694 chip, the 4th resistance and controller；
The non-inverting input terminal and output end of the AD549 processor are connected to after the first resistor and first capacitor are in parallel
Between；
After second resistance and the series connection of the second capacitor, one end is connect with the output end of the AD549 processor, another termination
Ground；
The output end of the AD549 processor is connect with the signal input part of AD694 chip, the letter of the AD694 chip
Number output end input controller after the 4th resistance.
Further, the controller is equipped with display screen.
Further, the comparison voltage input end grounding of the AD694 chip.
Further, the calibrator with heat-resisting property further includes a third capacitor, the third capacitor and described the
One resistance and first capacitor are in parallel.
Compared with the existing technology, the micro-current magnification circuit in the calibrator of the present invention with heat-resisting property has
Following advantage:
(1) calibrator of the present invention with heat-resisting property, using the feedback system of RC mode, at AD549
It manages device and amplifies the collected voltage signal of Acquisition Circuit, and voltage signal is converted by current signal input by AD694 chip
Controller is shown, is eliminated the biasing zeroing circuit in former AD549 processor peripheral circuit containing potentiometer, is avoided height
To the influence of AD549 output voltage caused by influence of the temperature to potentiometer resistance, reduces zero and float and error, improve calibrator
The stability of measurement extends the shelf life of calibrator so that data display error is smaller.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the micro voltage amplifying circuit schematic diagram in the former calibrator with potentiometer；
Fig. 2 is the circuit diagram of the calibrator described in the embodiment of the present invention with heat-resisting property.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the present invention includes AD549 processor, first resistor R1, first capacitor C1, second resistance R2, second
Capacitor C2, AD694 chip, the 4th resistance and controller.
The non-inverting input terminal of the AD549 processor and defeated is connected to after the first resistor R1 and first capacitor C1 is in parallel
RC feed circuit between outlet, as micro voltage amplifying circuit.
After second resistance R2 and the second capacitor C2 series connection, one end is connect with the output end of the AD549 processor, the other end
Ground connection is that the output voltage of AD549 processor filters.
The signal output end of AD549 processor is connect with the signal input part of the AD694 chip, by AD549 processor
Amplified voltage signal is converted into current signal.
The signal output end of AD694 chip is obtained through the 4th resistance R4 input controller, controller analysis processing current signal
It is shown to the thickness of object under test, and in the display screen being arranged on the controller as a result, wherein the 4th resistance R4 plays current limlitings work
With.
Controller is equipped with display screen, in order to the display of calibrator measurement result.
The comparison voltage input end grounding of AD694 chip, the pin are connect with one end of the second capacity earth, realize voltage
The relative value of signal inputs.
Calibrator with heat-resisting property further includes a third capacitor, and the third capacitor and first resistor and first capacitor are simultaneously
Connection, expands the measuring range of AD549.
The collected micro voltage signal of Acquisition Circuit of the non-inverting input terminal input calibrator of the AD549 processor, warp
AD549 processor amplifies micro voltage, inputs AD694 chip, and amplified voltage signal is converted into electric current by AD694 chip to be believed
Number, and measurement thickness will be shown after current signal input controller data processing in display screen, wherein amplification board uses pressure stabilizing
It powers to 4 feet and 7 feet of AD549 processor.
The present invention uses RC feedback system, reduces zero and floats and error, stability is good, and data display error is small, extends
The service life of calibrator.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of calibrator with heat-resisting property, it is characterised in that: including AD549 processor, first resistor (R1), the first electricity
Hold (C1), second resistance (R2), the second capacitor (C2), AD694 chip, the 4th resistance (R4) and controller；
The non-inverting input terminal of the AD549 processor and defeated is connected to after the first resistor (R1) and first capacitor (C1) are in parallel
Between outlet；
After second resistance (R2) and the second capacitor (C2) series connection, one end is connect with the output end of the AD549 processor, the other end
Ground connection；
The signal output end of the AD549 processor is connect with the signal input part of the AD694 chip；
The signal output end of the AD694 chip inputs the controller through the 4th resistance (R4).
2. the calibrator according to claim 1 with heat-resisting property, it is characterised in that: the controller is equipped with display
Screen.
3. the calibrator according to claim 1 with heat-resisting property, it is characterised in that: the comparison of the AD694 chip
Voltage input end ground connection.
4. the calibrator according to claim 1 with heat-resisting property, it is characterised in that: it further include a third capacitor, it should
Third capacitor (C3) is in parallel with first resistor (R1) and first capacitor (C1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610531639.1A CN106017384B (en) | 2016-07-07 | 2016-07-07 | A kind of calibrator with heat-resisting property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610531639.1A CN106017384B (en) | 2016-07-07 | 2016-07-07 | A kind of calibrator with heat-resisting property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106017384A CN106017384A (en) | 2016-10-12 |
| CN106017384B true CN106017384B (en) | 2018-12-14 |
Family
ID=57108176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610531639.1A Active CN106017384B (en) | 2016-07-07 | 2016-07-07 | A kind of calibrator with heat-resisting property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106017384B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893432A (en) * | 2009-05-21 | 2010-11-24 | 昆山善思光电科技有限公司 | Nondestructive flaw detection thickness meter |
| CN103457558A (en) * | 2013-06-17 | 2013-12-18 | 马鞍山恒瑞测量设备有限公司 | Variable gain low current picking and amplifying circuit |
| CN204892561U (en) * | 2015-08-06 | 2015-12-23 | 深圳市日联科技有限公司 | X ray calibrator with X ray signal amplification function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2833549B1 (en) * | 2013-08-01 | 2016-04-06 | EchoStar UK Holdings Limited | Loudness level control for audio reception and decoding equipment |
-
2016
- 2016-07-07 CN CN201610531639.1A patent/CN106017384B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893432A (en) * | 2009-05-21 | 2010-11-24 | 昆山善思光电科技有限公司 | Nondestructive flaw detection thickness meter |
| CN103457558A (en) * | 2013-06-17 | 2013-12-18 | 马鞍山恒瑞测量设备有限公司 | Variable gain low current picking and amplifying circuit |
| CN204892561U (en) * | 2015-08-06 | 2015-12-23 | 深圳市日联科技有限公司 | X ray calibrator with X ray signal amplification function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106017384A (en) | 2016-10-12 |
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