CN106164622B - Inductance type transducer circuit - Google Patents
Inductance type transducer circuit Download PDFInfo
- Publication number
- CN106164622B CN106164622B CN201580014927.3A CN201580014927A CN106164622B CN 106164622 B CN106164622 B CN 106164622B CN 201580014927 A CN201580014927 A CN 201580014927A CN 106164622 B CN106164622 B CN 106164622B
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- mentioned
- signal
- control unit
- circuit
- type transducer
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Classifications
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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
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/2006—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the self-induction of one or more coils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/001—Calibrating encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to inductance type transducer circuits, and according to the embodiment of the present invention of the answer speed to improve sensor, technological thought is to include：The first calculating amplifier that detection circuit portion, which includes the capacitor that forms oscillating circuit in parallel with above-mentioned inductor, the waveform generated in oscillating circuit is received as to electric signal is amplified, receive the electric signal amplified in above-mentioned first calculating amplifier carry out rectification and advection filter house and will be above-mentioned filter house be rectified and the converting electrical signal of advection is the first control unit that the first digital signal exports；Linearizer portion, including receive the analog signal measured by above-mentioned micrometer and be transformed to the second digital signal and take this as the standard be compared the range adjuster of the simultaneously maximum value of the second control unit of the data-signal of linearization, the zero adjuster of the zero of the above-mentioned data-signal of adjusting and the above-mentioned zero of adjusting with above-mentioned first digital signal；Output circuit portion, including receive the data-signal that export from above-mentioned second control unit and be transformed to third control unit that analog voltage signal exported, read the third calculating amplifier that the second calculating amplifier, amplification that the symbol of voltage signal input from above-mentioned third control unit exported are sent to external leading-out terminal from the voltage signal of above-mentioned second calculating amplifier input；And power circuit part, the constant voltage for circuit drives is provided and supplies reference voltage to the A/D converter for being built in above-mentioned second control unit.
Description
Technical field
The present invention relates to inductance type transducer circuits, more particularly to detect and transmit in real time the cylinder discharge valve position of engine
Inductance type transducer circuit.
Background technology
With the development of industry, the engine needed for shipbuilding industry is also environmental protection and has efficient performance, is used
Electronic type control mode.
In addition, the inductance type transducer of one of structure that the electronic type for engine controls is attached to the cylinder exhaust of engine
Valve to detect the position of above-mentioned air bleeding valve in real time, to which output is stop signal and is sent to central control system.
Above-mentioned inductance type transducer is because be used to attach to test position, therefore developing way in the prior art is to reduce
Physical imperfection reduces measurement error.At the same time, it with the development of the information processing technology, links with above-mentioned inductance type transducer
Transmission device and central control unit have Ultrahigh speed data transmit and processing capacity.
But although the inductance type transducer of the prior art is in Ultrahigh speed data transmission and processing environment, because of detection
And export that the answer speed needed for the position of air bleeding valve is excessively slow, to be unable to reach the transmission device to link therewith and center control
The performance of device.
Invention content
Technical task
A kind of vapour that detection and output engine can be improved is provided it is an object of the invention to overcome the deficiency of the prior art
The inductance type transducer circuit of the answer speed of cylinder exhaust valve positions.
Solution
In order to achieve the above objectives, according to an embodiment of the invention, a kind of inductance type transducer circuit is provided, is used to attach to
The inductance type transducer of the cylinder discharge valve of engine, in the inductor and micrometer that real-time detection passes through above-mentioned inductance type transducer
The analog signal measured, in the inductance type transducer circuit to export the position signal of above-mentioned air bleeding valve, including：Detection circuit
Portion includes the capacitor of formation oscillating circuit in parallel with above-mentioned inductor, receives the waveform generated in oscillating circuit
The first calculating amplifier for being amplified for electric signal, receive the electric signal that amplifies in above-mentioned first calculating amplifier carry out it is whole
The filter house of stream and advection and by above-mentioned filter house is rectified and the converting electrical signal of advection to be that the first digital signal carries out defeated
The first control unit gone out；Linearizer portion, including receive the analog signal measured by above-mentioned micrometer and be transformed to second
Digital signal and taking this as the standard is compared with above-mentioned first digital signal and the second control of the data-signal of linearization
The range adjuster of the zero adjuster of the zero of unit, the above-mentioned data-signal of adjusting and the maximum value of the above-mentioned zero of adjusting；It is defeated
Go out circuit portion, including receives the data-signal exported from above-mentioned second control unit and be transformed to what analog voltage signal was exported
Second that the symbol for the voltage signal that third control unit, reading are inputted from above-mentioned third control unit is exported calculates amplification
The third that the voltage signal that device, amplification are inputted from above-mentioned second calculating amplifier is sent to external leading-out terminal calculates amplifier；
And power circuit part, provide the constant voltage for circuit drives and to the A/D converter for being built in above-mentioned second control unit
Supply reference voltage.
Here, preferably, above-mentioned detection circuit portion further includes the output end generation frequency control for being connected to above-mentioned oscillating circuit
The oscillation control unit of signal processed, and above-mentioned oscillation control unit is sensitive by the frequency adjusting measurement for controlling above-mentioned waveform
Degree.
In addition, above-mentioned power circuit part, it may include：Surge absorber protects internal element from external abnormal voltage；Line
Circle and capacitor respectively connect with above-mentioned surge absorber and parallel connection are to form the decaying filtering circuit of block noise.
Invention effect
According to the present invention of above-described embodiment, the answer speed of inductance type transducer is embodied as 5Khz or more, to big
Width improves the performance of the transmission device and central control unit that link therewith.In addition, comparing the inductance by inductance type transducer
Two signals that device and micrometer measure are linearized, and measurement accuracy is greatly improved.
Description of the drawings
Fig. 1 is the circuit diagram for the inductance type transducer circuit for indicating the embodiment of the present invention.
Specific embodiment
In the following, present pre-ferred embodiments are described in detail in conjunction with attached drawing.In addition, being omitted or simplified to relevant art
The readily comprehensible structure of technical staff in field and its functions and effects illustrate, and centered on part related to the present invention into
Detailed description is gone.
Especially, the inductance type transducer circuit of the embodiment of the present invention, for being attached to the cylinder discharge valve of engine
Inductance type transducer premised on, detection in real time passes through the inductor 210 and micrometer (not shown) of above-mentioned inductance type transducer
The analog signal measured, to export the position signal of above-mentioned air bleeding valve.
As shown in Figure 1, above-mentioned inductance type transducer circuit generally comprise detection circuit portion 200, linearizer portion 400,
Output circuit portion 600 and power circuit part 800.
First, above-mentioned detection circuit portion 200 include it is in parallel with above-mentioned inductor 210 formed oscillating circuit capacitor 220,
By the waveform generated in oscillating circuit is received as that electric signal is amplified first calculates amplifier 240, receives upper
The electric signal amplified in the first calculating amplifier 240 is stated to carry out the filter house 260 of rectification and advection and will pass through in above-mentioned filter house
The converting electrical signal of 260 rectifications and advection is the first control unit 280 that the first digital signal is exported.
Here, above-mentioned capacitor 220 and inductor 210 are constituted the electricity of also known as electrical resonator with LCR parallel oscillatory circuits
Road.Frequency of oscillation at this time isThis waveform generates whirlpool by the metallics close to above-mentioned inductor 210
Electric current, and certain nonlinear variation occurs by above-mentioned eddy current for the wave height of frequency of oscillation.This changing value is transferred to above-mentioned
First calculates amplifier after Current amplifier, by comparing device U2B+stitch and resistance R1 be transferred to comparator U3A-needle
Foot.At this point, comparator U2B, U3A and trigger U2, U3 formation rectification circuit, distortionless ground fast recovery rectifier waveform, and it is rectified
Waveform be computed amplifier U3B advections, by stitch CLK, Dout, CS/SHDN of above-mentioned first control unit be sent to by
Want aftermentioned linearizer portion 400.
In addition, above-mentioned detection circuit portion 200 further includes the output end generation FREQUENCY CONTROL letter for being connected to above-mentioned oscillating circuit
Number oscillation control unit U1, and above-mentioned oscillation control unit U1 by control the frequency of above-mentioned waveform adjust measure it is sensitive
Degree.
Then, above-mentioned linearizer portion includes receiving the analog signal measured by above-mentioned micrometer to be transformed to the second number
Word signal and taking this as the standard is compared with above-mentioned first digital signal and the second control of the data-signal of linearization is single
The range adjuster of the maximum value of member 440, the zero adjuster 460 of the zero of the above-mentioned data-signal of adjusting and the above-mentioned zero of adjusting
480。
Here, above-mentioned second control unit 440 can be by being integrated with calculation processing circuit, input/output interface and memory
The form of one-chip microcomputer is constituted, and the algorithm for linearisation in above-mentioned memory is preserved with program form.In addition,
Above-mentioned second control unit 440 and above-mentioned micrometer are directly connected to by conducting wire, at this point, in above-mentioned second control unit 440
Inside is built-in with A/D converter, without that can carry out signal conversion by external circuit, does not delay processing speed.
In addition, the method for realizing linearisation in above-mentioned linearizer portion 400 has the side of tangent line approximate way sequencing
Method, and the output voltage of external electric micrometer is input to the+AN_IN and 0Vdc_AN of above-mentioned second control unit simultaneously
Changed simultaneously with certain speed using external miniature motor above-mentioned inductor 210 and tested metallics apart from while, to
The method of 440 auto-programming input linear of above-mentioned second control unit.
In addition, above-mentioned zero adjuster 460 and range adjuster 480 are made of variable resistance, above-mentioned variable resistance can root
The various forms such as C film type or metal-free ceramic-type are selected according to use environment or purpose of design.
Then, above-mentioned output circuit portion 600 includes receiving the data-signal transformation exported from above-mentioned second control unit 440
The third control unit 640 that is exported for analog voltage signal reads voltage input from above-mentioned third control unit 640 and believes
Number symbol exported second calculate amplifier 660, amplification from it is above-mentioned second calculate amplifier 660 input voltage signal
The third for being sent to external leading-out terminal calculates amplifier 680.
Here, the voltage signal exported from above-mentioned third control unit 640 is calculated to above-mentioned second by stitch Vout and is put
Big device 660+stitch partial pressure is input to resistance R17 and R18.The voltage signal that above-mentioned second calculates amplifier 660 is input to lead to
The I/V converters or V/V amplifier circuits for crossing above-mentioned third calculating amplifier 680 are exported to leading-out terminal+OUTPUT and 0Vdc_
OUT is sent to outside.
Then, above-mentioned power circuit part 800 provides the constant voltage for circuit drives and is controlled to being built in above-mentioned second
The A/D converter of unit 440 processed supplies reference voltage.
Here, above-mentioned power circuit part 800 may also include surge absorber (surge absorber), and above-mentioned surge is inhaled
It receives device 820 and is connected to the input terminal of power circuit part 800 from the abnormal voltage protection internal element of outside.
In addition, above-mentioned power circuit part 800 may also include each connect with above-mentioned surge absorber 820 and coil L1 in parallel
And capacitor C11, C12, C13, and above-mentioned coil L1 and capacitor C11, C12, C13 formation decaying filtering circuit play blocking and make an uproar
The effect of sound.
In addition, the PWM1 for being illustrated in above-mentioned power circuit part 800 is constant voltage supply module, it is active to internally
The stable power supply of element supply.U6 is accurate constant voltage reference IC, to being built in above-mentioned second control unit 440
A/D converter supplies reference voltage.
According to the circuit design of embodiment present invention as described above, the answer speed of inductance type transducer is embodied as
5Khz or more, to greatly improve the performance of the transmission device and central control unit that link therewith.Pass through inductance in addition, comparing
Two signals that the inductor and micrometer of formula sensor measure are linearized, and measurement accuracy is greatly improved.
For facilitate a better understanding of will aftermentioned claims of the present invention, the present invention is widely described in detail in the above
The characteristics of and technical characteristic.Above-described embodiment be only to illustrate the present invention and it is unrestricted, those skilled in the art should
Understand, can modify, deform or equivalent replacement to the present invention.And do not departing within the spirit and scope of the present invention,
It is intended to be within the scope of the claims of the invention.
Industrial applicibility
The present invention relates to inductance type transducer circuit, it is used especially for detecting and transmitting the cylinder discharge valve position of engine in real time
The inductance type transducer circuit set.
Claims (4)
1. a kind of inductance type transducer circuit, is used to attach to the inductance type transducer of the cylinder discharge valve of engine, is examined in real time
The analog signal measured by the inductor and micrometer of above-mentioned inductance type transducer is surveyed, the position to export above-mentioned air bleeding valve is believed
Number inductance type transducer circuit in, which is characterized in that including：
Detection circuit portion includes the capacitor of formation oscillating circuit in parallel with above-mentioned inductor, will be generated in oscillating circuit
Waveform is received as the first calculating amplifier that electric signal is amplified, receives and amplify in above-mentioned first calculating amplifier
Electric signal carry out rectification and advection filter house and will be above-mentioned filter house be rectified and the converting electrical signal of advection is the first number
The first control unit that word signal is exported；
Linearizer portion, including receive the analog signal measured by above-mentioned micrometer and be transformed to the second digital signal and with this
Subject to be compared with above-mentioned first digital signal and the second control unit of the data-signal of linearization, adjust above-mentioned number
It is believed that number zero zero adjuster and adjust above-mentioned zero maximum value range adjuster；
Output circuit portion, including receive the data-signal exported from above-mentioned second control unit and be transformed to analog voltage signal progress
The second meter that the third control unit of output, the symbol for reading the voltage signal inputted from above-mentioned third control unit are exported
The third calculating that the voltage signal that calculation amplifier, amplification are inputted from above-mentioned second calculating amplifier is sent to external leading-out terminal is put
Big device；And
Power circuit part provides the constant voltage for circuit drives and is converted to the A/D for being built in above-mentioned second control unit
Device supplies reference voltage.
2. inductance type transducer circuit according to claim 1, it is characterised in that：
Above-mentioned detection circuit portion further includes the vibrational control for the output end generation frequency control signal for being connected to above-mentioned oscillating circuit
Unit, and above-mentioned oscillation control unit adjusts measurement sensitivity by controlling the frequency of above-mentioned waveform.
3. inductance type transducer circuit according to claim 1, it is characterised in that：
Above-mentioned power circuit part includes being connected to power input and protecting the surge of internal element to inhale from external abnormal voltage
Receive device.
4. inductance type transducer circuit according to claim 3, it is characterised in that：
Above-mentioned power circuit part includes the decaying filtering circuit for block noise, wherein above-mentioned decaying filtering circuit by with it is above-mentioned
The concatenated coil of surge absorber and the capacitor in parallel with above-mentioned surge absorber are formed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140039262A KR101414214B1 (en) | 2014-04-02 | 2014-04-02 | Circuit For Inductive Sensor |
| KR10-2014-0039262 | 2014-04-02 | ||
| PCT/KR2015/003269 WO2015152641A1 (en) | 2014-04-02 | 2015-04-02 | Inductive sensor circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106164622A CN106164622A (en) | 2016-11-23 |
| CN106164622B true CN106164622B (en) | 2018-09-07 |
Family
ID=51740920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580014927.3A Active CN106164622B (en) | 2014-04-02 | 2015-04-02 | Inductance type transducer circuit |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101414214B1 (en) |
| CN (1) | CN106164622B (en) |
| WO (1) | WO2015152641A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20190036959A (en) | 2017-09-28 | 2019-04-05 | 금오기전 주식회사 | Apparatus and Method for Linearizing Sensor Output in Sensor Data Processing System |
| CN112665499B (en) * | 2020-12-03 | 2022-08-23 | 珠海格力电器股份有限公司 | Position detection device and method of inductive height sensor and automobile |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504441A (en) * | 2008-12-31 | 2009-08-12 | 人民电器集团有限公司 | Intelligent high-voltage switchgear assembly detection apparatus |
| CN203323775U (en) * | 2013-07-05 | 2013-12-04 | 科瑞(苏州工业园区)工业电子有限公司 | Application specific integrated circuit (ASIC)-based inductance sensor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3684109B2 (en) * | 1999-06-30 | 2005-08-17 | 株式会社東芝 | Voltage controlled oscillator circuit |
| JP2003156304A (en) | 2001-11-22 | 2003-05-30 | Ribekkusu:Kk | Position detector in fluid pressure cylinder |
| JP4232726B2 (en) * | 2004-10-18 | 2009-03-04 | 株式会社デンソー | Rotation detector |
| US20070216324A1 (en) * | 2006-03-17 | 2007-09-20 | Hiwin Mikrosystem Corp. | Demodulation method of resolver output position signal |
| KR101059381B1 (en) * | 2009-08-19 | 2011-08-25 | 김지홍 | Analog signal compensator to adjust zero and span |
| KR101036006B1 (en) * | 2009-09-17 | 2011-05-23 | 주식회사 세나코 | Position Transducer and Device Method of the Same |
| US9366547B2 (en) * | 2009-12-07 | 2016-06-14 | Ams Ag | Sensor arrangement and method for operating a sensor arrangement |
-
2014
- 2014-04-02 KR KR1020140039262A patent/KR101414214B1/en active IP Right Grant
-
2015
- 2015-04-02 CN CN201580014927.3A patent/CN106164622B/en active Active
- 2015-04-02 WO PCT/KR2015/003269 patent/WO2015152641A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504441A (en) * | 2008-12-31 | 2009-08-12 | 人民电器集团有限公司 | Intelligent high-voltage switchgear assembly detection apparatus |
| CN203323775U (en) * | 2013-07-05 | 2013-12-04 | 科瑞(苏州工业园区)工业电子有限公司 | Application specific integrated circuit (ASIC)-based inductance sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015152641A1 (en) | 2015-10-08 |
| KR101414214B1 (en) | 2014-07-01 |
| CN106164622A (en) | 2016-11-23 |
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