CN108458652A - Based on capacitance measurement burning core intersection device - Google Patents
Based on capacitance measurement burning core intersection device Download PDFInfo
- Publication number
- CN108458652A CN108458652A CN201810517120.7A CN201810517120A CN108458652A CN 108458652 A CN108458652 A CN 108458652A CN 201810517120 A CN201810517120 A CN 201810517120A CN 108458652 A CN108458652 A CN 108458652A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- pressure sensor
- capacitance
- horizontal
- core intersection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses one kind based on capacitance measurement burning core intersection device, including measures part, motion parts, pressure sensor, support section, control section.Support section includes horizontal platform and fixing bracket；Motion parts include horizontal step motor and vertical stepper motor, are mounted on fixing bracket, and two stepper motors control capacitor horizontal position spatially and vertical position respectively；Measurement portion point includes capacitor and the pressure sensor mounted on capacitive bottom, capacitor is moved to liquid level or more inside oil product, capacitance size, which has, to be substantially change, changed using capacitor signal and determines oil product interfaces position, oil product basal surface position is determined by pressure sensor, and then determines core intersection；Control section includes mainly microcontroller and computer, the signal intensity of displacement distance and monitoring capacitor and pressure sensor for controlling stepper motor.Step number that computer is moved by stepper motor and to the variation of induction signal, you can determine core intersection.
Description
Technical field
The present invention relates to a kind of combustion oil thickness measuring devices, more particularly to one kind is based on capacitance measurement burning oil reservoir
Thickness device.
Background technology
Oil product is in storage, transport and process, it is easy to leakage occur and form oil sheet burning.After burning occurs,
Influence area is relatively large, easily causes secondary derivative accident, causes catastrophic consequence, such as ZhangZhou tank fields Gu Lei accident,
Initially precisely due to caused by leakage fire.Therefore, oil sheet research becomes research emphasis both at home and abroad in recent years.Burning
Core intersection is a key parameter in combustion process, can accurately measure the thickness of burning oil reservoir, is to solve oil sheet combustion
One basic research step of burning problem.
The current method for measuring liquid thickness is broadly divided into contact type measurement and non-contact measurement, and most of measurement liquid
Body thickness device is all directed to the measurement of liquid layer thickness under normal circumstances, few thickness measure dresses under combustion case
It sets.Oil product measures the device of thickness, point for mainly utilizing thermocouple to capture steam with oil product surface under combustion case at present
Boundary's point, and then determine core intersection.But in fact, the product vapour temperature in the above very wide range in oil product surface is relatively low,
With oil product temperature close, using thermocouple it is difficult to accurately capture the border region of oil reservoir surface and steam, and then lead to nothing
Method accurately calculates core intersection.And for contactless measuring device, such as laser, ultrasonic wave measuring device, it is fired in oil product
In the case of burning, flame will produce the spectrum of different-waveband, directly affect the accuracy of measurement.
Invention content
The object of the present invention is to provide one kind based on capacitance measurement burning core intersection device.
The purpose of the present invention is what is be achieved through the following technical solutions：
The present invention based on capacitance measurement burn core intersection device, including measure part, motion parts, pressure sensing
Device, support section, control section, the control section include the microcontroller and computer being connected；
The measurement portion point includes capacitor and pressure sensor, and the capacitor includes the parallel rectangle steel disc of two panels,
The capacitor is connected with PCAP chips, and the PCAP chips are equipped with capacitance size measuring unit, the unit and the capacitor
It is connected, the output end of the PCAP chips is connected with the microcontroller；
The pressure sensor is mounted on capacitor bottom end, the pressure sensor output end and the computer phase
Even；
The motion parts include horizontal step motor and vertical stepper motor, and two stepper motors control the electricity respectively
Container horizontal position spatially and vertical position, two stepper motors are connected with control module simultaneously, the control module
It is connected with microcontroller；
The support section includes horizontal platform, and the fixing bracket of vertical direction, the fixed branch are housed on the horizontal platform
The ceramic tube of horizontal direction is housed, the horizontal step motor and vertical stepper motor are mounted on the fixing bracket on frame.
As seen from the above technical solution provided by the invention, provided in an embodiment of the present invention to be fired based on capacitance measurement
Oil firing layer thickness device determines the interface location of oil product and steam using the variation of capacitance；Meanwhile capacitor bottom end
It is mounted with a pressure sensor, when capacitor bottom end touches oil product bottom surface, is using the change of pressure sensor signal
It can determine the basal surface position of oil product.After determining basal surface position and oil product and steam interface location, you can calculate core intersection.
Description of the drawings
Fig. 1 is the structural schematic diagram of the core intersection device provided in an embodiment of the present invention that burnt based on capacitance measurement；
Fig. 2 is the partial enlarged view of Fig. 1.
In figure：
1：PCAP chips；2：Microcontroller；3：Computer；4：Step motor control module；5：Fixing bracket；6：Horizontal stepping
Motor；7：Horizontal platform；8：Signal wire；9：Vertical stepper motor；10：Ceramic tube；11：Capacitor；12：Pressure sensor.
Specific implementation mode
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to the prior art well known to professional and technical personnel in the field.
The present invention's is burnt core intersection device based on capacitance measurement, and preferable specific implementation mode is：
Including measuring part, motion parts, pressure sensor, support section, control section, the control section includes phase
The microcontroller and computer of connection；
The measurement portion point includes capacitor and pressure sensor, and the capacitor includes the parallel rectangle steel disc of two panels,
The capacitor is connected with PCAP chips, and the PCAP chips are equipped with capacitance size measuring unit, the unit and the capacitor
It is connected, the output end of the PCAP chips is connected with the microcontroller；
The pressure sensor is mounted on capacitor bottom end, the pressure sensor output end and the computer phase
Even；
The motion parts include horizontal step motor and vertical stepper motor, and two stepper motors control the electricity respectively
Container horizontal position spatially and vertical position, two stepper motors are connected with control module simultaneously, the control module
It is connected with microcontroller；
The support section includes horizontal platform, and the fixing bracket of vertical direction, the fixed branch are housed on the horizontal platform
The ceramic tube of horizontal direction is housed, the horizontal step motor and vertical stepper motor are mounted on the fixing bracket on frame.
The horizontal edge of table installs three air levels, and the marginal position installation of the horizontal platform bottom surface four can adjust
The leveling serew of height.
For the ceramic tube inside dress there are two thin ceramic tubes, the double-end conducting wire of capacitor is arranged in two
In thin ceramic tubes.
The capacitor, pressure sensor and ceramic tube are fixed as an overall structure.
The present invention based on capacitance measurement burn core intersection device, mainly utilize capacitor capacitance size and two
The relevant principle design of medium between pole plate.Concrete principle：For capacitor inside oil product, the medium between capacitance the two poles of the earth is oil
Product, capacitor is after oil product enters steam, and the medium between capacitance two-stage is product vapour, when capacitance enters steam dome from oil product
Afterwards, the capacitance of capacitor can occur significantly to change.Device utilizes the variation of capacitance, determines the interface of oil product and steam.
Meanwhile capacitor bottom end is mounted with a pressure sensor, when capacitor bottom end touches oil product bottom surface, utilizes pressure sensing
The change of device signal can determine the bottom surface of oil product.After determining basal surface position and oil product and steam interface location, you can calculate
Core intersection.
Specific embodiment：
As shown in Figure 1 and Figure 2, include mainly：Capacitor, PCAP chips, microcontroller, pressure sensor, stepper motor, step
Stepper motor control module, microcontroller, fixing bracket, horizontal platform, computer, ceramic tube etc..
(1) capacitive part
Capacitor 11 is mainly made of (but being not limited to rectangle) the parallel rectangle stalloy of two panels, and the spacing of steel disc can root
According to requiring specifically to set.Rectangle steel disc vertical level, in order to reduce experimental error, the both sides of steel disc vertical level can basis
Required precision is set to different length, and the both sides of parallel water plane can suitably lengthen within the scope of conditions permit, and then increases
Capacitance.1 one end of PCAP chips is connected with capacitor, for measuring the size of condenser capacitance.1 other end of PCAP chips and monolithic
Machine 2 is connected, and converts digital signals into the voltage signal that can be measured.Microcontroller 2 is connected with computer, and it is real-time to be mainly used for record
Voltage signal.
By capacitance correlation module, the capacitance size of capacitor can be changed into the voltage signal that can be directly read.
(2) motion parts
Stepper motor 6,9 is to control the position of capacitor 11 spatially respectively.The precision of stepper motor is in 0.2 millimeter of model
In enclosing, can in the horizontal direction with moved on vertical direction.Stepper motor 6,9 is connected with control module 4 simultaneously, then with microcontroller
4 are connected, and are mainly used for controlling the step number that moves every time of stepper motor and whether motor works.
By moving correlation module, movement of the capacitor in a certain plane on horizontal and vertical direction can be realized.
(3) pressure sensor
Pressure sensor 12 is mounted on capacitor bottom end, and whether capacitor contacts with bottom end for identification.It is pressed by identifying
The voltage signal of force snesor changes, and determines capacitor and the contact position of bottom surface.
(4) support section
Support device includes mainly horizontal platform 7, fixing bracket 5 and ceramic tube 10.The edge of horizontal platform 7 is installed by three levels
Bubble is used for whether detection platform is horizontal, and four marginal position installations of platform base can adjust the leveling serew of height.Fixed branch
Frame 5 is vertical with horizontal platform, for fixing stepper motor.Ceramic tube 10 is mainly used to support and protect conducting wire.Oil product is burned
Cheng Zhong can generate high temperature gas flow, and ceramic tube has many characteristics, such as that heat-resisting and deformation is small, be influenced on capacitor locations variation smaller.
11 double-end conducting wire two-stage of capacitor is arranged in fine ceramic shop simultaneously, and two thin ceramic tubes are placed on ceramic tube simultaneously
Inside 10, which is primarily used to reduce the influence that the conducting wire of capacitance generates capacitor.Capacitor 11, pressure sensor 12
Become a fixed entirety by process with ceramic tube 10.
(5) coupling part
Conducting wire 8 is mainly used for connecting each section module, ensures that computer can be transferred to by measuring the various signals obtained
On.
(6) control section
Control section is mainly made of microcontroller 2 and computer 3.By writing relative program on computer 3, control is single
Piece machine 2, and then control entire motion module and measurement module.
Specific embodiment influence factor discussion：
(1) capacitor
Capacitor is mainly made of two rectangle stalloys, and height of the capacitor plate on vertical-horizontal direction is to surveying
Accuracy of measurement influences apparent.In terms of to burning oil sheet thickness measure, capacitor rectangle steel disc is shorter as possible in vertical direction, into
And increase the precision measured.Since the capacitor plate of whole device is relatively small, connecting wire is to entire condenser capacitance
The influence of size is fairly obvious.In order to reduce the influence of conducting wire, two connecting wires are mainly respectively arranged by device in the design
In ceramic tube inside.But conducting wire still has capacitance certain influence.Therefore, capacitor board 11 and ceramic tube 10 in the production process
Between coupling part require it is shorter.
(2) stepper motor
Stepper motor can control the position of capacitor by way of Mechanical Moving.Stepper motor itself operates unstable
Property and precision size, directly affect measurement result.
(3) pressure sensor
Under the conditions of conditions permit, multiple pressure sensors are arranged along pole plate side in capacitor bottom end, ensure capacitor
Bottom end after contacting bottom surface, can timely trigger signal, ensure stepper motor can shut down in time, avoid capacitive means from damaging
Evil.
Specific embodiment operating instruction：
(1) according to measurement accuracy requirement and experimental conditions, suitable ceramic tube, capacitor, stepper motor etc. are selected.It utilizes
Leveling serew carries out leveling to experimental bench, and rear determine in experiment needs the location point measured.
(2) on computers, capacitor is moved to and measures position upper end by the mobile step number for setting stepper motor.It utilizes
Stepper motor on vertical direction, the position of adjustment capacitor in the vertical direction, when pressure signal becomes larger suddenly, vertical side
Motor stop motion is stepped up, which is installed the value for being set to dead-center position, while recording capacitance by computer.
(3) after recording, computer controls vertical stepper motor by microcontroller and moves upwards, until capacitance signal occurs
After more becoming, stepper motor stopping moves upwards, and the step number that computer is moved up by stepper motor determines the shifting on vertical direction
Dynamic distance, and recorded.
(4) after the completion of recording, the stepper motor of computer control vertical direction moves downward, until pressure sensor signal is prominent
After change, calculates and record the distance moved down.After record is good, by being compared with first time measured value, confirmatory measurement
Accuracy.
(5) stepper motor is increased to certain position by measurement error after receiving in range, using horizontal step motor,
Capacitor is moved to next measurement position, starts new measurement.
Specific embodiment autgmentability explanation：
(1) device be mainly using the capacitor locations in two step motor control planes, in conditions permit,
A stepper motor can be increased, realize the position for controlling capacitor in space, but various support devices needs adjust accordingly
And change.
(2) device is mainly to determine the phase of capacitor using the distance of the step number and each moved further of stepper motor movement
To position, but in practical application, it is contemplated that the unstability of stepper motor.In the regarded as output controlling of device, can by capacitor and
Ceramic tube is mounted on digital vernier slide calliper rule side after fixing, and capacitor is measured using the distance of digital vernier slide calliper rule one end movement
Practical displacement distance.
(3) device is mainly the interface that oil product and product vapour are identified using capacitance method, and the capacitance mentioned in device is
One group of rectangular flat, but it is not limited to rectangle in practical invention, the shape of capacitor can be changed according to actual requirement.
(4) support device in device can accordingly be changed according to actual requirement, be not limited to structure shown in figure.Together
When ceramic tube 10 also can with other insulation heat proof material be made.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (4)
1. one kind is based on capacitance measurement burning core intersection device, which is characterized in that including measuring part, motion parts, pressure
Force snesor, support section, control section, the control section include the microcontroller and computer being connected；
The measurement portion point includes capacitor and pressure sensor, and the capacitor includes the parallel rectangle steel disc of two panels, described
Capacitor is connected with PCAP chips, and the PCAP chips are equipped with capacitance size measuring unit, which is connected with the capacitor,
The output end of the PCAP chips is connected with the microcontroller；
The pressure sensor is mounted on capacitor bottom end, and the pressure sensor output end is connected with the computer；
The motion parts include horizontal step motor and vertical stepper motor, and two stepper motors control the capacitor respectively
Horizontal position spatially and vertical position, two stepper motors are connected with control module simultaneously, the control module and list
Piece machine is connected；
The support section includes horizontal platform, the fixing bracket equipped with vertical direction on the horizontal platform, on the fixing bracket
Ceramic tube equipped with horizontal direction, the horizontal step motor and vertical stepper motor are mounted on the fixing bracket.
2. according to claim 1 based on capacitance measurement burning core intersection device, which is characterized in that the horizontal platform
Edge three air levels are installed, the installation of four marginal positions in the horizontal platform bottom surface can adjust the leveling serew of height.
3. according to claim 2 based on capacitance measurement burning core intersection device, which is characterized in that the ceramic tube
There are two thin ceramic tubes, the double-end conducting wire of capacitor is arranged in two thin ceramic tubes inside dress.
4. according to claim 3 based on capacitance measurement burning core intersection device, which is characterized in that the capacitance
Device, pressure sensor and ceramic tube are fixed as an overall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517120.7A CN108458652A (en) | 2018-05-25 | 2018-05-25 | Based on capacitance measurement burning core intersection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810517120.7A CN108458652A (en) | 2018-05-25 | 2018-05-25 | Based on capacitance measurement burning core intersection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108458652A true CN108458652A (en) | 2018-08-28 |
Family
ID=63215892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810517120.7A Pending CN108458652A (en) | 2018-05-25 | 2018-05-25 | Based on capacitance measurement burning core intersection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108458652A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540061A (en) * | 2019-08-15 | 2019-12-06 | 广东嘉仪仪器集团有限公司 | full-automatic comprehensive detector for tank front end size |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56162001A (en) * | 1980-05-20 | 1981-12-12 | Ishikawajima Harima Heavy Ind Co Ltd | Measuring device for oil film thickness |
| CN2911677Y (en) * | 2006-01-11 | 2007-06-13 | 冯晓明 | Probe of oil-water interface detector |
| CN101709988A (en) * | 2009-12-10 | 2010-05-19 | 昝昕武 | Method for sensing automotive oil level and sensor |
| CN202974386U (en) * | 2012-12-20 | 2013-06-05 | 东华理工大学 | Fuel gauging device of fuel tank |
| CN106197346A (en) * | 2016-07-07 | 2016-12-07 | 清华大学 | Measure the device of combustion oil layer thickness |
| CN106247919A (en) * | 2016-09-21 | 2016-12-21 | 天津海运职业学院 | A kind of measuring of oil film method and measuring of oil film instrument |
-
2018
- 2018-05-25 CN CN201810517120.7A patent/CN108458652A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56162001A (en) * | 1980-05-20 | 1981-12-12 | Ishikawajima Harima Heavy Ind Co Ltd | Measuring device for oil film thickness |
| CN2911677Y (en) * | 2006-01-11 | 2007-06-13 | 冯晓明 | Probe of oil-water interface detector |
| CN101709988A (en) * | 2009-12-10 | 2010-05-19 | 昝昕武 | Method for sensing automotive oil level and sensor |
| CN202974386U (en) * | 2012-12-20 | 2013-06-05 | 东华理工大学 | Fuel gauging device of fuel tank |
| CN106197346A (en) * | 2016-07-07 | 2016-12-07 | 清华大学 | Measure the device of combustion oil layer thickness |
| CN106247919A (en) * | 2016-09-21 | 2016-12-21 | 天津海运职业学院 | A kind of measuring of oil film method and measuring of oil film instrument |
Non-Patent Citations (1)
| Title |
|---|
| 芮延年: "机器人传感器", 《机电一体化系统设计》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110540061A (en) * | 2019-08-15 | 2019-12-06 | 广东嘉仪仪器集团有限公司 | full-automatic comprehensive detector for tank front end size |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104483896B (en) | Method for realizing thermal compensation of lead screw of numerical control machine tool | |
| CN104535792B (en) | High-sensitive hot wind speed sensor structure and wind speed and wind direction measuring method | |
| CN106989712B (en) | A kind of high-precision Self-resetting probe-type displacement measuring device and measuring method | |
| CN204086398U (en) | Crystal-silicon solar cell front electrode measuring contact resistance device | |
| CN103364182B (en) | The device of flat spring rigidity is tested under a kind of hot environment | |
| CN108458652A (en) | Based on capacitance measurement burning core intersection device | |
| CN203298723U (en) | Combined test tool for insulator geometric tolerance | |
| CN106225694A (en) | A kind of integrated die surface measured film thickness instrument of intelligence | |
| CN103149236B (en) | Low-temperature material linear expansion coefficient measuring method and low-temperature material linear expansion coefficient measuring device | |
| CN202304771U (en) | Detector for detecting impeller positioning guide rod of through-flow fan impeller ultrasonic bonding machine | |
| CN103884270A (en) | Device for measuring two-dimensional micro angle generated in installation of circular grating and method thereof | |
| CN104154872A (en) | Device for measuring envelope of automobile power assembly | |
| CN209894749U (en) | Double-capacitor temperature and humidity sensor | |
| CN104897713B (en) | A kind of device of the thermal deformation and deformation power uniformity for measuring thrermostatic bimetal-plate | |
| CN216350456U (en) | Device for measuring linear expansion coefficient of metal by using equal-thickness interference | |
| CN105606640A (en) | Photoelectric metal linear expansion coefficient determination device | |
| CN207335649U (en) | Battery measurement machine | |
| CN206601526U (en) | A kind of tower heliostat assembly tool | |
| CN109702320A (en) | A kind of glass laser index carving system | |
| CN101865648A (en) | High-accuracy capacitor micrometer | |
| CN203672339U (en) | PCB flatness detection device based on laser triangle method | |
| CN203479485U (en) | Device for testing stiffness of flat spring in high-temperature environment | |
| CN209783309U (en) | Grate cooler material thickness measuring device | |
| CN103439527A (en) | Capacitance type minitype machine wind speed wind direction sensor | |
| CN103901275A (en) | Pressure sensing type conductive ink resistance value tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180828 |
|
| RJ01 | Rejection of invention patent application after publication |