CN103623999B - Runout screening machine calibrating installation - Google Patents
Runout screening machine calibrating installation Download PDFInfo
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- CN103623999B CN103623999B CN201310352640.4A CN201310352640A CN103623999B CN 103623999 B CN103623999 B CN 103623999B CN 201310352640 A CN201310352640 A CN 201310352640A CN 103623999 B CN103623999 B CN 103623999B
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Abstract
Runout screening machine calibrating installation disclosed by the invention comprises sensor and prover, and sensor is mainly used in collection and the conversion of signal; Prover is used for logical combination, measurement, data processing and measurement result display; The digital identification sensor of sensor, vibrating sensor, photoelectric sensor are connected with signal processing unit respectively, signal is sent to signal adaptation unit after signal processing unit, CPLD is transferred to after carrying out signal amplitude coupling by adaptation unit, CPLD utilizes the calibration pulse of standard crystal oscillator to measure measured signal, and send measurement result to single-chip microcomputer, after completing data processing, final measurement outputs to display screen and is stored in register.The present invention can measure three parameters of runout screening machine simultaneously, reduces cost, improves efficiency; Achieve when there is no circuit interface synchronous by the time signal of calibration equipment and standard device, reduce measure error, improve the degree of accuracy of time measurement result.
Description
Technical field
The present invention relates to the calibration to time, vibration frequency, rotating speed, particularly the calibration of runout screening machine.
Background technology
Shot-blast process is a kind of polishing blank, eliminates the technique of internal stress and material forming, and be widely used in heavy-duty machinery and produce, large ship manufacture, aircraft manufacturing, in the industries such as automobile making.Runout screening machine is a kind of equipment screening bullet used in shot-blast process, is must indispensable key equipment in shot-blast process.Runout screening machine needs Preset Time, and during startup, on runout screening machine, the time showing of LED7 segment numeral pipe changes in time and successively decreases.During work, runout screening machine vibrating device drives screen tray up-down vibration, and vibrating device having one increase the weight of rod along with vibrating device together up-down vibration, can increase the weight of excellent most of barred body at device interior, only has that upper end is a bit of exposes equipment surface.Meanwhile, screen tray also moves in a circle along with tumbler, and equipment top has a mini-roundabout can rotate along with tumbler.Until Preset Time arrives, LED7 segment numeral pipe extinguishes entirely, and runout screening machine quits work.On runout screening machine, the parameter of required calibration comprises time, vibration frequency, rotating speed three parameters, and runout screening machine calibrating installation is the standard device developed for the calibration requirements of runout screening machine.
Do not have at present can the standard device of simultaneously alignment time, vibration frequency, rotating speed three parameters also do not have can the portable standard device of field calibration, the calibration of runout screening machine need be sent to calibration test room, and point three parameters independently are carried out, time-consuming, require great effort.And the calibration steps of time parameter introduces larger human factor, the degree of accuracy is very low.At present, the calibration specific practice of runout screening machine is as follows:
1) calibration of time parameter: because runout screening machine is not set aside some time metering interface, mode when stopwatch can only be adopted at present manually to block, manually press runout screening machine start key and stopwatch start key simultaneously, when the time arrives, runout screening machine quits work, and manually presses stopwatch stop key simultaneously.
2) calibration of vibration frequency parameter: vibration signal is converted to pulse signal by vibrating sensor, with the time interval of the device measuring such as dynamic signal analyzer or oscillograph two subpulse.
3) calibration of rotary speed parameter: adopt rotational speed meters or frequency meter to implement calibration.
The existing collimation technique of runout screening machine has two aspects not enough:
1) mode when calibration of time parameter adopts stopwatch manually to block, human factor is very large on the impact of calibration result, measurement result poor repeatability, and error is larger;
2) there is no the portable standard device simultaneously can calibrating three parameters, during calibration, runout screening machine need be sent to three calibration test rooms.Runout screening machine and used standard device are all inconvenient to carry, and cause sending the school time long, increase time, transport, cost of labor.
Summary of the invention
The present invention seeks to solve when not free calibration circuit interface, time signal cannot be synchronous, metering system when manually blocking is adopted to introduce the problem of larger human error, develop the calibrating installation of a set of portable comprehensive parameter measuring, the time of the on-the-spot runout of measurement simultaneously screening machine, vibration frequency, rotating speed three parameters can be carried into, also independently can measure these three parameters, solve the problem that runout screening machine send school inconvenience.
Runout screening machine calibrating installation of the present invention, comprise power supply, sensor and prover, sensor comprises digital identification sensor, vibrating sensor, photoelectric sensor and signal processing unit, for collection and the conversion of signal; Prover comprise CPLD, single-chip microcomputer, signal adaptation unit, standard crystal oscillator, register, keyboard and and display unit, groundwork comprises, logical combination, measurement, data processing and measurement result display; Numeral identification sensor, vibrating sensor are connected with signal processing unit respectively with photoelectric sensor, and measured signal is sent to signal adaptation unit after signal processing unit; CPLD is transferred to after carrying out signal amplitude coupling by adaptation unit, CPLD utilizes the calibration pulse of standard crystal oscillator to measure to measured signal, and send measurement result to single-chip microcomputer, complete data processing by single-chip microcomputer and by final measurement display on a display screen, final measurement be stored in register simultaneously; Power supply.
Numeral identification sensor comprises sensor probe, signal conversion, coding circuit and programming in logic circuit, and wherein basic the and LED7 segment numeral pipe of sensor probe size is in the same size.Sensor probe has several aperture, the position of the luminous tube of aperture pitch and relative position and LED7 segment numeral pipe is basically identical, and whole 7 apertures on sensor probe can aim at the centre position of corresponding charactron in LED7 segment numeral pipe.As shown in Figure 3, in the aperture of sensor probe, light-sensitive device is housed.
This light-sensitive device comprises photo resistance, photodiode or phototriode, electronic switching circuit is coordinated to be used for the luminous tube signal of LED7 segment numeral pipe to be converted into low and high level, when but if the light-sensitive device adopted is phototriode, then do not need electronic switching circuit, it directly can export low and high level from colelctor electrode.The colelctor electrode of 7 electronic switching circuit outputs or phototriode forms one group of low and high level, and this group low and high level is delivered in 10 logic gates respectively.Each logic circuit can be organized low and high level according to this and judge whether the display numeral of LED7 segment numeral pipe is some numerals that " 0 " arrives in " 9 ", if it is exports level"1", otherwise exports " 0 ".10 different logic circuits are used for judging that " 0 " arrives " 9 " whole ten numerals.The output of these ten logic circuits is connected to the corresponding input of BCD encoder respectively, and namely the binary-coded decimal obtained is the numeral of LED7 segment numeral pipe display.As shown in Figure 4.Utilize so digital identification sensor the time figure of LED7 segment numeral pipe display on runout screening machine can be converted to binary system binary-coded decimal.
This group low and high level is delivered in 10 different logic circuits respectively, each logic circuit can be organized low and high level according to this and judge whether the display numeral of LED7 segment numeral pipe is some numerals that " 0 " arrives in " 9 ", if it is export level"1", otherwise export " 0 ".10 different logic circuits are used for judging that " 0 " arrives " 9 " whole ten numerals.That is, LED7 segment numeral pipe display " 0 " all can have a logic circuit to export level"1" to any one numeral in " 9 ", and other nine logic circuits export level "0".The output of these ten logic circuits is connected to the corresponding input of BCD encoder respectively, and namely the binary-coded decimal obtained is the numeral of LED7 segment numeral pipe display, and this binary-coded decimal is sent to CPLD.
Vibrating sensor is converted into pulse signal for vibration signal vibration on runout screening machine being increased the weight of rod.Because the size of aftershock and vibration force can have an impact to the output signal of vibrating sensor, after vibrating sensor, be therefore connected to anti-interference and circuit that is signal adaptation.This circuit comprises monostable flipflop, bleeder circuit and comparator, for eliminating aftershock signal and signal amplitude conversion, enabling the pulse signal of output meet the reception requirement of CPLD, avoiding the measure error that distorted signals and CPLD logic error cause.
Photoelectric sensor is for being converted into pulse signal by the heliogram on runout screening machine rotating disk.The impulse amplitude exported due to photoelectric sensor is not mated with the input range of CPLD, therefore connects a voltage conversion circuit at photoelectric sensor output and grabs for signal amplitude the reception requirement changing to meet CPLD.
When implementing the calibration of runout screening machine, first digital identification sensor is aimed at LED runout screening machine being used for displaying time, as shown in Figure 2, the last position, the rightmost namely in Fig. 2 one.Vibrating sensor is installed in the upper end of increasing the weight of rod of runout screening machine, and sticks reflecting strips on the rotating disk of runout screening machine, photoelectric sensor is aimed on the path of the movement of reflecting strips after dial rotation.Then on runout screening machine prover, select required measurement function and markers and start runout screening machine prover.Finally set the working time of runout screening machine, and start runout screening machine, calibration starts.At the end of calibration, on a display screen, runout screening machine calibrating installation quits work automatically in measurement result display.
Tool of the present invention has the following advantages:
1) calibrate because the feature of runout screening machine calibrating installation portability can be carried into scene, the measurement function of comprehensive parameters can measure three parameters of runout screening machine simultaneously, make the calibration of runout screening machine no longer need to be sent to calibration test room to carry out, reduce cost, improve efficiency.
2) digital identification sensor distinguishes that the time figure that runout screening machine shows enables CPLD carry out the time consistency of regulating gate time and runout screening machine according to binary-coded decimal programming.Achieve when there is no circuit interface synchronous by the time signal of calibration equipment and standard device, eliminate the measure error that human factor causes, improve the degree of accuracy of time measurement result.
Accompanying drawing explanation
Fig. 1 is runout screening machine calibrating installation hardware system block diagram
Fig. 2 is runout screening machine LED charactron schematic diagram used
Fig. 3 is digital identification sensor probe schematic diagram
Fig. 4 is digital identification sensor structural representation
Fig. 5 is the connection layout of runout screening machine calibrating installation and runout screening machine when implementing calibration
In Fig. 2,21.LED shows tenths, 22.LED display point position, and 23.LED shows ten seconds positions, and 24.LED shows position second;
In Fig. 3,31. digital identification sensor probes, 32. for placing the aperture of light-sensitive device;
In Fig. 5,51. runout screening machines, 52. screen traies, 53.LED7 segment numeral pipe, 54. vibrations increase the weight of rod, 55. rotating disks, 56. digital identification sensors, 57. vibrating sensors, 58. photoelectric sensors, 59. runout screening machine provers, 510. A-frame, 511. sensor interfaces, 512. display screens, 513. keyboards.
Detailed description of the invention
See Fig. 1-to Fig. 5:
In Fig. 1, the digital identification sensor of Sensor section, vibrating sensor, photoelectric sensor gather corresponding measured signal respectively, send signal to signal processing unit.Signal processing unit carries out to the signal of three sensors the process getting rid of clutter respectively.Then three treated sensor signal signal adaptation unit sent in prover are carried out the adaptation of signal amplitude, three signals are sent into CPLD after completing adaptation respectively to three signals by signal adaptation unit.CPLD utilizes programmed circuit to carry out logical transition to three signals and forms three corresponding time gates, and the calibration pulse signal that recycling standard crystal oscillator exports counts three time gates respectively, forms measurement data.The measurement data of single-chip microcomputer reading CPLD is carried out corresponding data processing and is formed final measurement result, measurement result is stored in register and also shows on a display screen.Simultaneously Single-chip Controlling coordinate the work of the inner each working cell of prover.The power supply of prover part is powered to each working cell of Sensor section and prover.
When implementing the calibration of runout screening machine, first digital identification sensor is aimed at LED runout screening machine being used for displaying time, as shown in Figure 2, the last position, the rightmost namely in Fig. 2 one.Vibrating sensor is installed on the vibrating head of runout screening machine, and sticks reflecting strips on the rotating disk of runout screening machine, speed probe is aimed on the path of the movement of reflecting strips during dial rotation.Then on runout screening machine prover, select runout screening machine calibration function and markers and start runout screening machine prover.Finally preset the working time of runout screening machine, and start runout screening machine, calibration starts.The display change of the LED7 segment numeral pipe simultaneously on digital identification sensor identification runout screening machine, start-up time, gate, started counting.When the time of presetting arrives, runout screening machine quits work, and LED7 segment numeral pipe extinguishes, at the end of calibration entirely.Numeral identification sensor recognizes the display change of LED7 segment numeral pipe, and shut-in time gate, stops counting.Measurement data is final after the process of single-chip microcomputer forms measurement result display on a display screen.
In Fig. 3, the size of the LED7 segment numeral pipe on numeral probe 31 size of identification sensor and runout screening machine is basically identical, the position consistency of the relative position of the aperture 32 on probe and the luminous tube of LED7 segment numeral pipe, need the centre position each aperture on the probe of digital identification sensor being aimed at the luminous tube of corresponding LED before implementing the calibration of runout screening machine time parameter, enable the light-sensitive device in each aperture accurately sense the change of the optical signal of corresponding luminous tube.
In Fig. 4, each light-sensitive device in sensor probe is connected with an electronic switch, converts low and high level to, form the low and high level of a group after light-sensitive device senses the optical signal of the luminous tube of corresponding LED by corresponding electronic switch.If light-sensitive device is phototriode, do not need electronic switching circuit, it directly can low and high level after sensing the optical signal of LED.Equally, the low and high level of 7 phototriode outputs also forms one group of low and high level.This group low and high level is delivered in 10 different logic circuits respectively, each logic circuit can be organized low and high level according to this and judge whether the display numeral of LED7 segment numeral pipe is some numerals that " 0 " arrives in " 9 ", if it is export level"1", otherwise export " 0 ".10 different logic circuits are used for judging that " 0 " arrives " 9 " whole ten numerals.That is, LED7 segment numeral pipe display " 0 " all can have a logic circuit to export level"1" to any one numeral in " 9 ", and other nine logic circuits export level "0".The output of these ten logic circuits is connected to the corresponding input of BCD encoder respectively, and namely the binary-coded decimal obtained is the numeral of LED7 segment numeral pipe display, and this binary-coded decimal is sent to CPLD.
The start and stop timing synchronization of time gate and runout screening machine start and stop of control time gate can be realized constantly according to the last display situation programming CPLD of LED7 segment numeral pipe during the start and stop of runout screening machine.
In Fig. 5, digital identification sensor probe 56 aims at the rightmost one of LED7 segment numeral pipe 53, and digital identification sensor cable is connected with sensor interface 511.Vibrating sensor 57 is installed on vibration to be increased the weight of on rod 54, and vibrating sensor cable is connected with sensor interface 511.Photoelectric sensor 58 is fixed on A-frame 510, and runout screening machine rotating disk 55 sticks the reflective paper slip of 1 to 2 mm wide, by the reflecting strips on alignment probe runout screening machine rotating disk 55.The keyboard 513 of runout screening machine prover 59 is selected runout screening machine calibration function and markers and starts runout screening machine prover 59.Preset operating time on runout screening machine 51, when runout screening machine 51 starts, the display of LED7 segment numeral pipe 53 rightmost one changes, and vibration simultaneously increases the weight of rod 54 vibration, and rotating disk 55 rotates and drives screen tray 52 to sieve.Numeral identification sensor probe 56 senses the change of optical signal and signal is imported into runout screening machine prover 59.Runout screening machine prover 59 utilizes this signal enabling time gate, and the time started counts.Vibrating sensor 57 senses that vibration increases the weight of the vibration signal of rod 54 and vibration signal changed into pulse signal and import in runout screening machine prover 59, runout screening machine prover 59 ranging pulse signal frequency.Photoelectric sensor 58 is responded to optical signal that reflective paper slip fires back and is changed into pulse signal and imports in runout screening machine prover 59, runout screening machine prover 59 ranging pulse signal frequency.When preset operating time arrives, runout screening machine 51 quits work, and LED7 segment numeral pipe 53 extinguishes, and digital identification sensor probe 56 senses the change of optical signal and imported into by signal in runout screening machine prover 59.Runout screening machine prover 59 utilizes this signal at stop time gate, stops counting.Measurement data is changed into final measurement and is presented on display screen 512 by runout screening machine prover 59.
Claims (4)
1. a runout screening machine calibrating installation, comprises power supply, sensor and prover, it is characterized in that, sensor is used for collection and the conversion of signal, and sensor comprises digital identification sensor, vibrating sensor, photoelectric sensor and signal processing unit; The work of prover comprises logical combination, measurement, data processing and measurement result display, and prover comprises CPLD, single-chip microcomputer, signal adaptation unit, standard crystal oscillator, register, keyboard and display unit; Numeral identification sensor, vibrating sensor are connected with signal processing unit respectively with photoelectric sensor, and measured signal is sent to signal adaptation unit after signal processing unit; CPLD is transferred to after carrying out signal amplitude coupling by adaptation unit, CPLD utilizes the calibration pulse of standard crystal oscillator to measure to measured signal, and send measurement result to single-chip microcomputer, complete data processing by single-chip microcomputer and by final measurement display on a display screen, final measurement be stored in register simultaneously.
2. runout screening machine calibrating installation according to claim 1, it is characterized in that, described digital identification sensor, comprise sensor probe, signal conversion, coding circuit and programming in logic circuit, sensor probe has the light-sensitive device of 7 corresponding LED7 segment numeral pipes.
3. runout screening machine calibrating installation according to claim 2, is characterized in that, 7 described light-sensitive devices are connected with 10 logic gates simultaneously, and the output of 10 gates is connected with BCD encoder.
4. runout screening machine calibrating installation according to claim 2, is characterized in that, the time figure that LED7 segment numeral pipe shows is converted to binary system binary-coded decimal by described digital identification sensor, and CPLD can according to binary-coded decimal programming with the start and stop of control time gate.
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| CN104503217A (en) * | 2014-11-21 | 2015-04-08 | 广西智通节能环保科技有限公司 | Stopwatch detector |
| CN105068468B (en) * | 2015-07-15 | 2020-02-04 | 杭州来昂电子有限公司 | Automatic nixie tube identification system based on light induction |
| CN110211361B (en) * | 2019-07-03 | 2020-08-28 | 安徽大学 | Household gas self-service meter reading method and device |
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| CN2549433Y (en) * | 2002-05-21 | 2003-05-07 | 武显荣 | Portable transverse vibration tester for bridge |
| WO2004030834A1 (en) * | 2002-10-03 | 2004-04-15 | Bühler AG | Active compensation of vibrations in a machine for cleaning grain |
| CN201302674Y (en) * | 2008-11-11 | 2009-09-02 | 西安锦程振动科技有限责任公司 | Portable vibrating screen measuring and controlling instrument |
| CN201616026U (en) * | 2010-03-12 | 2010-10-27 | 西安锦程振动科技有限责任公司 | Monitoring and maintaining system for vibrating screen |
| EP2548659A2 (en) * | 2004-04-29 | 2013-01-23 | Varco I/P, Inc. | Vibratory separator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000288469A (en) * | 1999-04-08 | 2000-10-17 | Murakami Seiki Kosakusho:Kk | Optimum mode selecting resonance type vibrating classifier |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2549433Y (en) * | 2002-05-21 | 2003-05-07 | 武显荣 | Portable transverse vibration tester for bridge |
| WO2004030834A1 (en) * | 2002-10-03 | 2004-04-15 | Bühler AG | Active compensation of vibrations in a machine for cleaning grain |
| EP2548659A2 (en) * | 2004-04-29 | 2013-01-23 | Varco I/P, Inc. | Vibratory separator |
| CN201302674Y (en) * | 2008-11-11 | 2009-09-02 | 西安锦程振动科技有限责任公司 | Portable vibrating screen measuring and controlling instrument |
| CN201616026U (en) * | 2010-03-12 | 2010-10-27 | 西安锦程振动科技有限责任公司 | Monitoring and maintaining system for vibrating screen |
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