CN102003571A - Aperture indicator - Google Patents

Aperture indicator Download PDF

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Publication number
CN102003571A
CN102003571A CN 201010293136 CN201010293136A CN102003571A CN 102003571 A CN102003571 A CN 102003571A CN 201010293136 CN201010293136 CN 201010293136 CN 201010293136 A CN201010293136 A CN 201010293136A CN 102003571 A CN102003571 A CN 102003571A
Authority
CN
China
Prior art keywords
indicator
photoelectric sensor
measuring appliance
emitting diode
control display
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
Application number
CN 201010293136
Other languages
Chinese (zh)
Inventor
张永忠
吴舒辞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central South University of Forestry and Technology
Original Assignee
Central South University of Forestry and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Central South University of Forestry and Technology filed Critical Central South University of Forestry and Technology
Priority to CN 201010293136 priority Critical patent/CN102003571A/en
Publication of CN102003571A publication Critical patent/CN102003571A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an aperture indicator and provides a detecting device used for detecting and indicating the aperture of a valve and has higher resolution ratio, and is characterized in that the aperture indicator mainly comprises a control display unit and a measuring appliance which are connected by a cable, the inner part of the control display unit comprises a master controller and a display device, the measuring appliance consists of a light emitting diode array and a photoelectric sensor corresponding to the light emitting diode array, the middle of the measuring appliance is provided with a baffle with a hole controlled by the master controller, and the cable consists of a data cable and a common electric wire. The invention overcomes the defects of unreliable detection and short service life in a vibration environment well, and improves the resolution ratio of relative devices on the premise of saving cost through utilizing a common photoelectric sensor.

Description

Indicator of opening
Technical field
The present invention relates to valving, relate in particular to a kind of indicator of opening that detects and indicate the valve opening amplitude.
Background technique
Because when water pump is opened, water pump can drive valve vibration, so linear potentiometer sensor commonly used, all can not work reliably based on the electro-optical pickoff of relative value detection.
Existing aperture indication reality is exactly the displacement that needs indication valve push rod, the indication of displacement just.The method that detects displacement is a lot: as laser sensor, the precise grating chi, synchronous induction ruler, these instruments often adopt in high-precision measurement, resolution can reach 0.01 millimeter or higher, but price height, environment is also required height, the general indicator of opening that uses is mainly rotating coder, it can convert straight-line displacement to angle of swing through rack gear arrangement, rotating coder can higher accuracy detection go out the angle variation, but there is glass component rotating coder inside, resistance to shock is bad, be not suitable for when water pump is opened using, and the method for above introduction all can only react relative position, can't detect for the displacement that when indicator is not switched on, produces, detect the displacement when indicator is not switched on if desired, must use can react the sensor of absolute position.
And in general, the existing sensor that can react the absolute position that adopts, be mainly the resistance type displacement transducer, this is a kind of sensor of contact-type, the output analogue signal, and testing precision is relevant with circuit design, can at any time reflect the absolute position, but owing to be contact-type, frequent move or vibration environment in lost efficacy easily when using, the life-span is limited.
Summary of the invention
Technical problem solved by the invention is to provide a kind of indicator of opening, to solve the shortcoming in the above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Indicator of opening, mainly comprise a control display device and a measuring appliance, middle by elastic cable paper connection, wherein said control display interior comprises a main controller and a display unit, described measuring appliance is formed by a light emitting diode matrix with its corresponding photoelectric sensor, there is a baffle plate with holes by main controller control the centre, and described elastic cable paper is made up of datawire and power line.
Utilize light curtain principle, utilize a light emitting diode matrix to carry out position determination: to send the parallel IR of a row by the infrarede emitting diode row with the photoelectric sensor that is displayed in the light emitting diode opposite, photoelectric sensor by the opposite receives, when object stops in emission and between receiving, the photoelectric sensor of relevant position can't receive optical signal, thereby can determine the absolute position of testee.
Yet, in the present invention, because ray density has determined the resolution of displacement detecting.Be that resolution is subjected to infrarede emitting diode to be listed as the influence of the IR density of sending, the width of infrared electro groove crack commonly used device is 6mm, the spacing minimum that is to say IR also must be greater than 6mm, this will seriously limit the use of this sensor, therefore on the position probing plate washer of infrarede emitting diode row and photoelectric sensor, increase has some apertures, the lower end does not have the long and porose upper end part of bore portion outline, utilize article one IR that computer on slice just can matching program be blocked the below graduation of whole numbers of units as the position, the position probing that resolution requirement is higher can be realized with bigger light spacing like this as the decimal part of position probing in the position in the hole that the top is not blocked.
Sensor section adopts single-chip microcomputer as main controller, single-chip microcomputer connects photoelectric sensor and control and keeps photoelectric sensor to be operated in scanning mode, the infraluminescence pipe connects by matrix-style commonly used, the positive-negative input end of Single-chip Controlling infraluminescence pipe, when a high electricity frequency of output, when the electricity frequency is hanged down in an output, the infraluminescence pipe is luminous, single-chip microcomputer then detects photo-sensor signal will, to determine whether corresponding IR is blocked, and then detect next light in the same way and whether lived by shelves, all detect up to all light and finish.Single-chip microcomputer reads and calculates the absolute position of the middle plate washer of light in conjunction with the method that improves resolution herein.
Sensor to position signal be sent to Displaying Meter with binary data format by the RS485 data/address bus, Displaying Meter is converted into the valve opening of representing with percentage according to user's requirement again, and shows.The RS485 bus also can be connected to computer simultaneously simultaneously, and the aperture data just can show synchronously on computers like this.
Beneficial effect:
The present invention is based on infrared photoelectric sensor and adopt absolute value position probing principle, solve indicator of opening well and in vibration environment, detected shortcoming unreliable or that the life-span is not long, utilize the normal optical electric transducer to improve the method for resolution simultaneously, when not raising the cost, improved testing precision.
Description of drawings
Fig. 1 is the schematic representation of preferred embodiment of the present invention;
Fig. 2 is an absolute value optoelectronic position device schematic representation of the present invention;
Fig. 3 is a high resolution sensor schematic representation one of the present invention;
Fig. 4 is a high resolution sensor schematic representation two of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Schematic representation referring to the preferred embodiment of the indicator of opening of Fig. 1 comprises control display device 1 and measuring appliance 3, and the middle elastic cable paper of forming with datawire and common wiring 2 is connected.
Absolute value optoelectronic position device schematic representation of the present invention referring to Fig. 2, one light emitting diode matrix 4 is wherein arranged on measuring appliance 3, there is the photoelectric sensor 7 of a correspondence on light emitting diode matrix 4 opposites, during work, light emitting diode matrix 4 sends a series of detection light beams 6, testee 5 blocked and detects light beam 6 when corresponding testee 5 was arranged in the middle of detecting light beam 6, can be at the coherent signal point of photoelectric sensor 7 down auxiliary, obtain the position information of testee 5, and show by control display device 1 through converting.
In using process of the present invention, need the resolution of raising system.
In the embodiment one shown in the high resolution sensor of Fig. 3, the resolution of sensor is 2mm, the left side is a light emitting diode matrix 4, the right side is a photoelectric sensor 7, the spacing that detects light beam 6 is 10mm, middle plate washer 8 upper ends have the penetrating hole 9 of 4 wide 2mm, its spacing is 8mm, there is long imperforate section plate washer 8 lower ends, article one that begin from the below this moment detects light beam 6 and is blocked, and the unit of account of expression 10mm is 0, and the 3rd that makes progress is detected light beam 6 and pass through again, an expression position counting is 2, represents that promptly displacement is 2*2=4mm.
In the embodiment two shown in the high resolution sensor of Fig. 4, article one that one-chip computer matching program in the control display device 1 is blocked the below detects the graduation of whole numbers of units (digit be 10mm) of light beam 6 as the position, make progress the state of continuous 4 light as a position counting of position, with 2mm is that unit carries out moving on the vertical direction, present embodiment is the schematic representation after embodiment one moves 2mm, with the principle among the embodiment one, displacement is 6mm, like this, just with spacing be the resolution that the light of 10mm has been realized 2mm.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (4)

1. indicator of opening, it is characterized in that: mainly comprise a control display device and a measuring appliance, middle by elastic cable paper connection, wherein said control display interior comprises a main controller and a display unit, described measuring appliance is formed by a light emitting diode matrix with its corresponding photoelectric sensor, there is a baffle plate with a plurality of holes by main controller control the centre, and described elastic cable paper is made up of datawire and power line.
2. indicator of opening according to claim 1 is characterized in that, described baffle plate upper end has some apertures, and the lower end does not have the bore portion outline and is longer than porose upper end part, and aperture pitch is slightly less than the light spacing.
3. indicator of opening according to claim 1 is characterized in that, described main controller is a single-chip microcomputer, and single-chip microcomputer connects photoelectric sensor and controls output interface.
4. indicator of opening according to claim 1 is characterized in that, sensor to position signal be sent to Displaying Meter with binary data format by the RS485 data/address bus.
CN 201010293136 2010-09-27 2010-09-27 Aperture indicator Pending CN102003571A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010293136 CN102003571A (en) 2010-09-27 2010-09-27 Aperture indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010293136 CN102003571A (en) 2010-09-27 2010-09-27 Aperture indicator

Publications (1)

Publication Number Publication Date
CN102003571A true CN102003571A (en) 2011-04-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010293136 Pending CN102003571A (en) 2010-09-27 2010-09-27 Aperture indicator

Country Status (1)

Country Link
CN (1) CN102003571A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103728996A (en) * 2013-12-25 2014-04-16 合肥京东方光电科技有限公司 Pressure controller and opening degree adjusting method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050274353A1 (en) * 2004-06-15 2005-12-15 Toyota Jidosha Kabushiki Kaisha Control device of internal combustion engine
CN201281168Y (en) * 2008-10-10 2009-07-29 华北电力大学(保定) Valve capable of outputting flow signal
CN201582469U (en) * 2010-01-27 2010-09-15 北京信息科技大学 Valve control device
CN201779347U (en) * 2010-09-27 2011-03-30 中南林业科技大学 Opening amplitude indicator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050274353A1 (en) * 2004-06-15 2005-12-15 Toyota Jidosha Kabushiki Kaisha Control device of internal combustion engine
CN201281168Y (en) * 2008-10-10 2009-07-29 华北电力大学(保定) Valve capable of outputting flow signal
CN201582469U (en) * 2010-01-27 2010-09-15 北京信息科技大学 Valve control device
CN201779347U (en) * 2010-09-27 2011-03-30 中南林业科技大学 Opening amplitude indicator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103728996A (en) * 2013-12-25 2014-04-16 合肥京东方光电科技有限公司 Pressure controller and opening degree adjusting method thereof
CN103728996B (en) * 2013-12-25 2016-06-15 合肥京东方光电科技有限公司 Pressure controller and opening degree control method thereof

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Application publication date: 20110406