CN109935138A - Novel and multifunctional measurement and control integration teaching experiment platform - Google Patents
Novel and multifunctional measurement and control integration teaching experiment platform Download PDFInfo
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- CN109935138A CN109935138A CN201910314027.0A CN201910314027A CN109935138A CN 109935138 A CN109935138 A CN 109935138A CN 201910314027 A CN201910314027 A CN 201910314027A CN 109935138 A CN109935138 A CN 109935138A
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Abstract
The present invention relates to a kind of novel and multifunctional measurement and control integration teaching experiment platforms, including the fixed bracket of grating scale, close to switch fixing casing, grating reading head engagement plate, guide rail, grating sensor is installed on the fixed bracket of the grating scale, the grating reading head linking board ends are separately connected grating sensor, slide unit support board, pressure sensor is placed on the slide unit support board, it is described that inductance approach switch is installed close on switch fixing casing, temperature sensor is installed, guide rail two sides are equipped with direct acting type limit switch on the guide rail bottom surface.The present invention realizes that the multi-parameter synchro measure of heterogeneity physical quantity and data are wirelessly transferred by the multiple sensors being mounted on around screw slide, compensates for the defect of traditional measuring instrument；It realizes that the overtravel alarm of slide unit, automatic cycle move back and forth by the way that two kinds of limit switches are arranged on one-dimensional workbench, convenient for debugging and uses, there is good economic benefit and social benefit, be suitble to promote the use of.
Description
Technical field
The present invention relates to test experiments instrument field, specifically a kind of novel and multifunctional measurement and control integration teaching experiment is flat
Platform.
Background technique
As the continuous improvement of state education level and the content of courses of corresponding subject update, lab resources optimization is whole
It closes and teaching and scientific research combines the important research content for having become University Laboratory Construction and Laboratory Opening.A set of combination is big
Whether the experimental apparatus for testing of the opened curricula of Students ' Major has grasped sturdy theoretical basis, energy for detection university student
It is no that theoretical knowledge is converted into practice, the hands-on energy that culture university student finds the problem, ponders a problem and solves the problems, such as
Power all plays vital role.Currently, colleges and universities are traditionally used for the experiment of " measuring technology " and " detection technique " course
Device, there are problems that following defect urgently to be solved and: experimental provision has a single function, and can only measure individual or two or three of physics
Amount, can not realize the multi-parameter synchro measure of heterogeneity physical quantity, measurement data can only be in device on an experimental provision
It is shown in the instrument of installation itself, carries out data communication with host computer and mainly use serial communication mode, it can only real-time Transmission one
A physical quantity, and be wire communication, transmission speed is slow, lacks and is able to achieve multiple physical quantitys while measuring and data wireless transmission
Experimental provision, and the opening of most of experimental provisions is insufficient, needs the guidance of colleges and universities Specialty Experiment technical staff.
Summary of the invention
The purpose of the present invention is being directed to the deficiency of existing experimental provision integrated degree, a kind of novel and multifunctional observing and controlling is provided
Integrated Teaching experiment porch, the function of this teaching experiment platform have the multi-parameter synchro measure of more physical quantitys and data wirelessly to pass
Defeated, frequency control, fault alarm, automatic cycle move back and forth.The prominent feature of the teaching test stand is the physical quantity packet of acquisition
Include: it is professional to combine Mechanical & Electrical Transmission, sensing technology, measuring technology and configuration software etc. for temperature, vibration, pressure, revolving speed, displacement
Subject completes the hardware design of a whole set of experimental provision.It realizes and the experiment of comprehensive or intercrossing is carried out in same experimental provision,
And the experimental provision physical quantity to be controlled has reference standard, is completed at the same time teaching in culture university student's operating ability
Kechuang is combined closely and is optimized and combined to lab resources, and Experiment Course System is dramatically optimized, and improves experimental teaching
Quality.
Problem to be solved by this invention is realized using following technical scheme:
A kind of novel and multifunctional measurement and control integration teaching experiment platform, including system mounting bracket, one-dimensional workbench, physics
Detection device, data acquisition and radio transmitting device, which is characterized in that the system mounting bracket includes mounting base, light
Grid ruler fixes bracket, encoder support base, close to switch fixing casing, grating reading head engagement plate and slot optical coupling mounting blocks；Institute
The one-dimensional workbench stated includes custom precision screw slide, electric cabinet, flexible clutch, phase asynchronous decelerating motor；Described
Physical detection equipment includes grating sensor, groove profile photoelectric counter, photoelectric encoder, inductance approach switch, temperature sensing
Device, pressure sensor, direct acting type limit switch and piezoelectric acceleration transducer；The data acquisition device is data collecting card
Or single-chip microcontroller；The radio transmitting device is ZigBee module.
The custom precision screw slide of the one-dimensional workbench includes original ball-screw slide unit, slide unit support board, leads
Rail, reading head of the support board of screw slide in addition to being connected grating sensor, is also subjected to extraneous load, makes pressure sensor
It is placed in the centre of slide unit support board, the measurement process of pressure sensor can be allowed not by the constraint of other external mechanical structures, it is described
Guide rail can make slide unit follow the prescribed course operation.
The electric cabinet is sub, programmable including two power supply splitters, key switch, status indicator lamp, signal terminal
Logic controller, air switch, variable-frequency governor, Switching Power Supply, programmable logic controller (PLC) realize the movement of one-dimensional workbench
Sequential control.
The variable-frequency governor realizes the multistage velocity modulation speed of one-dimensional workbench.
The grating sensor includes grating scale (fixed grating) and reading head (moving grating), the pressure sensor
Including acrylic support board, elastomer (sensing element), resistance strain gage (sensing element) and Huygens's electric bridge (conversion circuit),
The inductance approach switch after the extreme position for reaching left and right ends, can voluntarily cut off circuit simultaneously by slide unit support board
And inverted running, realize that automatic cycle moves back and forth.
The grating sensor, groove profile photoelectric counter, photoelectric encoder, temperature sensor, pressure sensor, acceleration
Sensor realizes displacement respectively, revolving speed, temperature, and pressure vibrates the measurement of physical quantity.
The direct acting type limit switch includes transmission contact and switch main body, when inductance approach switch breaks down,
Realize the purpose of the extreme position and fault alarm that limit entire slide unit.
The data collecting card or single-chip microcontroller complete final data acquisition.
The radio transmitting device uses ZigBee module, and the ZigBee module includes sending module CC2530F256
With receiving module CC2530F256, realize the majority of heterogeneity physical quantity according to wireless transmission.
The beneficial effects of the present invention are: improve the deficiency of existing experimental apparatus for testing electromechanical integration, it can be in one-dimensional work
Make on platform realize operating status automatic switchover, plant failure when buzzing alarm, more physical quantitys multi-parameter synchro measure and
Data wireless transmission etc..Realize that the multi-parameter of heterogeneity physical quantity is same by the multiple sensors being mounted on around screw slide
Pacing amount, and data are sent to receiving module CC2530F256 through sending module CC2530F256 in time and realize that data wirelessly pass
It is defeated, compensate for the defect of traditional measuring instrument；Being out of the line for slide unit is realized by the way that two kinds of limit switches are arranged on one-dimensional workbench
Journey alarm, automatic cycle move back and forth, and convenient for debugging and use, and replace artificial guidance with semi-automatic instrument, not only increase
Efficiency of teaching, and lab resources integration and Experiment Course System are optimized, promote the development and progress of experimental teaching.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is grating sensor of the present invention and the support bracket fastened structural schematic diagram of grating scale；
Fig. 3 is the transmission mechanism schematic elevation view of the one-dimensional workbench of the present invention；
Fig. 4 is the electric cabinet structure schematic diagram of the one-dimensional workbench of the present invention；
Fig. 5 is the structural schematic diagram of transmission mechanism of the present invention, physical detection equipment；
In figure: 1, mounting base, 2, data collecting card, 3, grating sensor, 4, the fixed bracket of grating scale, 5, slot optical coupling
Mounting blocks, 6, encoder support base, 7, photoelectric encoder, 8, groove profile photoelectric counter, 9, photoelectric code disk, 10, screw slide,
11, close to switch fixing casing, 12, inductance approach switch, 13, temperature sensor, 14, pressure sensor, 15, the limit of direct acting type
Switch, 16, three-phase motor, 17, acceleration transducer, 18, electric cabinet, 19, status indicator lamp, 20, signal terminal, 21,
Key switch, 22, air switch, 23, frequency converter, 24, variable-frequency governor, 25,24V power supply splitter, 26,5V power supply branch
Device, 27, grating reading head engagement plate, 28, programmable logic controller (PLC), 29, Switching Power Supply, 31, original ball-screw slide unit,
111, kidney slot, 121, elastic washer, 212, short side's aluminium, 221, elongated side's aluminium, 222, kidney slot, 232, right-angle connector,
233, grating reading head, 234, grating scale, 311, slide unit support board, 312, guide rail, 361, ball-screw, 511, biggish flexibility
Shaft coupling, 512, lesser flexible clutch, 521, active sliding block, 522, driven sliding block, 531, bearing spider.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment and diagram are closed, the present invention is further explained.
As shown in figure 1, figure 2, figure 3, figure 4 and figure 5, shown, a kind of multifunctional measurement and control Integrated Teaching experimental bench, including be
System mounting bracket, one-dimensional workbench, physical detection equipment, data acquisition device.
As shown in Figure 1, Figure 2 and Figure 3, the system mounting bracket includes mounting base 1, grating scale fixed bracket 4, slot
Type optocoupler mounting blocks 5, encoder support base 6, close to switch fixing casing 11 and grating reading head engagement plate 27.Wherein, described
It is L-shaped close to switch fixing casing 11, it is characterised in that it is opened close on switch fixing casing 11 there are two circular hole and a kidney slot, it is round
Hole is connected by screw in mounting base 1, the slide unit support board 311 of the vertical plane face precision lead screw of kidney slot, and kidney slot
Length is significantly larger than institute's 12 diameter of inductance approach switch to be mounted, guarantees its upper and lower adjustable extent, according to support board table
Face to cast iron bottom plate upper surface distance, to customize the mounting bracket of corresponding height；The encoder support base 6 is located at ball
The extension end of lead screw 361, the center of the center height with ball-screw 361 of circular opening is high consistent in vertical plane, is evenly distributed on
The small-sized through-hole of circular opening periphery, respectively corresponds the fixed hole position of photoelectric encoder 7.It is opened on bottom surface there are two circular hole, it is round
Hole is connected by screw in mounting base 1；The slot optical coupling mounting blocks 5 are fixed on light by specific solid binder
The underface of code disc 9；The fixed bracket 4 of the grating scale includes two short side's aluminium 212 and elongated side's aluminium 221, short
Type side's aluminium 212 is vertically connected with elongated side's aluminium 221 according to the composed structure of beam bridge, and in short side, aluminium 212 is close to mounting base 1
Lower surface, perpendicular to the direction of elongated side's aluminium 221, one in front and one in back there are two right-angle connectors 232 for dress, sense in fixed grating
While the relative position of device 3 and screw slide 10, also ensure mounted component will not because of center of gravity distribution and occur
It tilts forward and back；Two sections of kidney slots, the reading of kidney slot 111 and grating sensor 3 are provided on the grating reading head engagement plate 27
It is connected for several 233, kidney slot 222 and slide unit support board 311 are connected, and the front and back span of the installation hole location of connecting object should be in kidney-shaped
Within the length range in hole, the spacing of two kidney slots then ensure that the grating reading head 233 being mounted laterally will not encounter slide unit load
Object plate 311.The function of this system mounting bracket is: as the fixation device between different electrical equipments, guarantee each equipment
The space utilization rate of stability and raising device entirety in operational process.
As shown in Fig. 1, Fig. 3 and Fig. 5, the electromechanical transmission mechanism includes custom precision screw slide 10, flexible coupling
Device 8, electric cabinet 18, phase asynchronous decelerating motor 16 (referred to as three-phase motor).Wherein, the custom precision screw slide 10
Including original ball-screw slide unit 31, slide unit support board 311, guide rail 312.It is characterized in that, in active sliding block 521 and driven
311 edge of slide unit support board that sliding block 522 supports jointly is drilled with equally distributed three through-holes, is used for fixed grating reading head
Engagement plate 27, in the upper surface where guide rail 312, the side of 522 or so two extreme positions of driven sliding block stays that there are two fixed
The threaded hole of direct acting type limit switch 15, in order to guarantee ball-screw 361 and high consistent, the silk in the center of 16 output shaft of three-phase motor
The bottom end of thick stick slide unit 10 is four sections of symmetrical square aluminium；In other end of the ball-screw 361 far from three-phase motor 10,
From the outwardly extending part of bearing spider 531, it is connected by lesser flexible clutch 512 with photoelectric encoder 7.Described is soft
Property shaft coupling 8 include biggish flexible clutch 511, lesser flexible clutch 512, the function of this flexible clutch is: compared with
Big flexible clutch 511 is used to connect the output shaft of three-phase motor 16 and the driven shaft of ball-screw 361；Lesser flexible connection
Axis device 512 is used to connect the projecting shaft of ball-screw 361 and the input shaft of photoelectric encoder 7.The function of the three-phase motor 16
It can be: drive ball-screw 361 to rotate, to realize that slide unit support board 311 moves left and right.The output shaft of three-phase motor 16 with compared with
Big flexible clutch 511, biggish flexible clutch 511 and ball-screw 361, ball-screw 361 and lesser flexible join
Axis device 512 is concentric fits relationship；Ball-screw 361 is matched with bearing spider 531, guide rail 312 and driven sliding block 522 for interference
It closes.
As shown in figure 4, the electric cabinet 18 include power supply splitter 25 and 26, key switch 21, status indicator lamp 19,
Signal terminal 20, programmable logic controller (PLC) 28, air switch 22, variable-frequency governor 24, Switching Power Supply 29.Wherein, institute
The function for the air switch 22 stated is protection circuit, since the gear unit of experimental provision is using 220V high voltage supply system
System, in order to avoid short circuit, overload or under-voltage situation occur during wiring in other electrical equipments；The frequency conversion
The function of governor 24 is: realize the multistage velocity modulation speed of one-dimensional workbench, due to number of magnetic pole pairs after motor is bought just really
It is fixed, it is also necessary to change the ac frequency being loaded on three-phase motor stator winding using variable-frequency governor 24, to change
The revolving speed of three-phase motor 16；The Switching Power Supply 29 refers to the AC-DC converter for supporting doubleway output (5/24V), due to whole
Set experimental provision needs the electrical component Numerous powered, and the direct-current working volts that different electrical components uses are also not to the utmost
Identical, function is: maintaining stable output voltage；The function of the programmable logic controller (PLC) 28 is to realize one-dimensional work
The sequence of motion of platform controls, and a whole set of laboratory apparatus has used independent key and double limitation to switch the triggering as gear unit
Device cooperates the status indicator lamp 19 of different colours to show the operating status of three-phase motor 16；The power supply splitter packet
The 24V power supply splitter 25 of 10 tunnels output and the 5V power supply splitter 26 of 4 tunnels output are included, due to relying solely in Switching Power Supply certainly
Tetra- tunnel Dai (two-way 24V output circuit, two-way 5V output circuit) connecting terminal is clearly far from being enough, i.e., can will be more
A peripheral hardware is connected in parallel on same terminals simultaneously, and the sum of power needed can also exceed the load of single connecting terminal, function
Be: the mixed and disorderly of each electronic component of limited containment is routed and separates the road N output interface from same circuit；The signal terminal
The effect of son 20 and the function of power supply splitter are very close, for convenience the signal wire of each sensor and data collecting card 2
Simulate the line of (number) input port；The key switch 21 includes that (rotating forward, frequency conversion, stops at reversion four independent keys
Only), for controlling the operating status of three-phase motor 16, it is characterised in that no matter in the ladder diagram of PLC using normally opened or
Normally-closed contact is both needed in actual wiring using normally opened wiring；The status indicator lamp 19 is corresponding with four independent keys,
It is the indicator light (rotating forward, reversion, operation prompt, buzzing alarm) of 4 operating statuses, for providing letter to current operator
Breath feedback.
As shown in Figure 1, the physical detection equipment includes grating sensor 3, photoelectric encoder 7, groove profile photoelectric counting
Device 8, inductance approach switch 12, PT100 temperature sensor 13, resistance strain type pressure sensor 14, direct acting type limit switch
15 and piezoelectric acceleration transducer 17.Wherein, the function of the piezoelectric acceleration transducer 17 is test in different frequencies
Under rate in three-phase motor 16 reduction gearing Vibration Condition, since in the transmission system of retarder, main vibration source is
It is generated by the engagement behavior of gear, therefore the fixed point of vibrating sensor, can be scheduled on and be in the path of contact of reduction gearing
It on conplane casing body, but is on the cylindrical surface of motor in view of the path of contact of reduction gearing and is not easy to install, taken here
Sensor is firmly adsorbed on to motor surface using the big suction magnetic support of screw-type close to the plane of bottom surface, completes entire peace
Dress；The function of the PT100 temperature sensor 13 is the temperature change of real-time monitoring linear guide 312, with screw slide
10 when moving back and forth driven by the motor, and the frictional heat of generation may cause the temperature distortion of linear guide, feature
It is, in the lower surface of other two sides and screw slide 10 of the bottom surface that driven sliding block 522 is directly contacted with linear guide 312
Between there is one of gap, the metal contact of sensor can be directly protruding between the gap of linear guide 312, utilize epoxy resin
Glue is fixed,, can at four sections of branches of guide rail since the frictional heat of 312 each section of linear guide accumulation is not identical
It is stained with three temperature sensors respectively；The resistance strain type pressure sensor 14 is (quick including acrylic support board, elastomer
Sensing unit), resistance strain gage (sensing element) and Huygens's electric bridge (conversion circuit), so that pressure sensor 14 is placed in slide unit loading
The centre of plate 311 can allow the measurement process of pressure sensor 14 not by the constraint of other external mechanical structures, and function is: real
When monitor slide unit support board 311 normal load.
As shown in Figure 1 and Figure 5, the groove profile photoelectric counter 8 includes slot optical coupling sensor and keel, feature
Be, using before slot optical coupling sensor, need except lead screw projecting shaft is by 8 wrapping portion of shaft coupling, put on it is defeated
The annular photoelectric code disk 9 that the diameter of axle matches out, the height according to the diameter of code-disc, on the vertical direction of appropriate adjustment keel
Degree.The function of this photoelectric counter 8 is to obtain the real-time revolving speed for the ball-screw being connected with decelerating motor；The photoelectric coding
Device 7 includes three photoelectricity adopters and angle code-disc, it is characterised in that three threaded holes is uniformly distributed on encoder, for fixing
Installing component and photoelectric encoder 7, function are: obtaining the real-time revolving speed of the higher ball-screw 361 of precision.Lesser flexibility
Shaft coupling 512 and photoelectric code disk 9, lesser flexible clutch 512 and 7 assembly relation of photoelectric encoder are concentric.
As shown in Fig. 2, the grating sensor 3 includes reading head 233 (moving grating) and (the fixed light of grating scale 234
Grid).It is characterized in that, being influenced by the height of slide unit support board 311, the square aluminium of three sections of different lengths is selected here (on four sides
For U-type groove), the mounting bracket of grating scale 234 is combined into using subsidiary right-angle connector 232.By adjusting T-bolt in U
The height of the upper surface of the grating reading head under state is put in position in type groove, control in side, and plate connector is facilitated to realize
The position of slide unit support board 311 and reading head 233 is fixed.The right-angle connector 232 of adjustment and contacts baseplate is in the horizontal plane
Position, to control the depth of parallelism between 233 apparent surface of grating scale 234 and reading head.Its function is: verifying 7 He of photoelectric encoder
The displacement of slide unit measured by photoelectric counter 8, screw rotation velocity accuracy, a whole set of experimental provision, which is chosen, has the measurement of higher level-one
The measurement result of the grating sensor of precision, the measurement true value as slide unit displacement and screw rotation velocity.
As shown in Figure 1, the inductance approach switch 12 is characterized in that, it is with elastic washer 121 close to switch 12
It is aligned assembly relation, directly adjusts the induction end close to switch 12 using the metal support board 311 of slide unit as by inductor here
It with the spacing of 311 side of slide unit support board, is within the induction range of switch, the function of this inductance approach switch 12
It is: allows slide unit support board after the extreme position for reaching left and right ends, can voluntarily cut off circuit and inverted running, realizes certainly
Dynamic iterative motion；The direct acting type limit switch 15 includes transmission contact and switch main body, which is characterized in that driven
Slide unit bottom surface between guide rail 312 and active lead screw 361, be equipped with the consistent threaded hole of 15 installation dimension of limit switch, be used for
Fixed limit switch 15, in order to which the effective travel of the ball-screw 361 after loading onto limit switch does not have biggish reduction, here
Make the recess direction of contact consistent with the direction of motion of screw slide 10, the function of this direct acting type limit switch is: avoiding in electricity
Slide unit support board 311 exceeds the safety travel of slide unit when sense formula breaks down close to switch 12, limits the limit position of entire slide unit
It sets and fault alarm.
As shown in Figure 1, the data acquisition device is 6229 data collecting card 2 of USB of U.S. NI company, for not
The physical quantity task of same type, data collecting card provide three kinds of simulation, number, counter data inputs, and function is: will
The corresponding digital quantity of the measurement results such as the collected temperature of physical detection equipment, vibration, be sent into host computer in Labview software into
The processing of one step, display, to complete final data acquisition and signal transmission.
The radio transmitting device is ZigBee module, it is characterised in that: described device includes monitoring modular and upper
Machine display module；The monitoring modular include multiple physical quantity transducers, sending module CC2530F256 be connected, independently-powered electricity
Source；The host computer display module includes receiving module CC2530F256, main control chip STC89C52, liquid crystal display
LCD1602；Plurality of physical sensors are connected through AD conversion module with sending module CC2530F256, independent power supply with
Sending module CC2530F256 is connected, and receiving module CC2530F256 is connected with main control chip STC89C52, main control chip
STC89C52 is connected with liquid crystal display LCD1602.The monitoring modular is mounted on around one-dimensional workbench, and the AD conversion
The analog signal that acquisition comes is converted into digital signal by module, then sends data to reception mould by sending module CC2530F256
Block CC2530F256；The host computer display module is placed at suitable position, which will by main control chip STC89C52
The data that receiving module CC2530F256 is received are shown on liquid crystal display LCD1602.
Used in the present apparatus more physical quantity transducers acquire in time the temperature of one-dimensional workbench, vibration, pressure, revolving speed,
The real-time conditions such as displacement, and data are sent to receiving module CC2530F256 host computer through sending module CC2530F256 in time
Place, data are handled through main control chip STC89C52, realize multi-parameter synchro measure and the data wireless transmission of more physical quantitys.And
The present apparatus can help experimenter to monitor the state of one-dimensional workbench in real time during unmanned work, be not necessarily to colleges and universities' Specialty Experiment
The guidance of technical staff.
In the use of the present invention, " the panel control " of variable-frequency governor 8 need to will need to be only switched to by operator, " outside is connect
Line end control ", in device operational process, be sure not to allow other non-inductive object metals close proximity to the detection range of switch within.With
This simultaneously forbids that new trapezoidal operational order is written into PLC.It, can be with after machine powers on and presses " rotating forward " start button
The green indicator light for seeing that display slide unit support board 311 rotates forward lights, and the yellow indicator lamp for indicating that device is working starts to dodge
Bright, the loading of screw slide will move downward, and three-phase motor 16 drives ball-screw by biggish flexible clutch 511
361 driven shaft rotation；Ball-screw 361 drives the translation of slide unit support board 311 by the driven sliding block 522 on guide rail 312；
Slide unit support board 311 drives the reading head 233 of grating sensor 3 to be translatable by grating reading head engagement plate 27；Ball-screw 361
Photoelectric counter 8 and rotary encoder 7 is driven to rotate by lesser flexible clutch 8.It is adsorbed on the pressure on motor surface at this time
Electric-type acceleration transducer 17 tests the Vibration Condition of reduction gearing in three-phase motor 16, the electricity being placed on slide unit support board 311
The normal load that strain pressure transducer 14 measures slide unit support board 311 is hindered, photoelectric encoder 7 and photoelectric counter 8 are distinguished
The real-time revolving speed for the ball-screw 361 being connected with three-phase motor 16 is measured, grating sensor 3 measures the position of slide unit support board 311
It moves, is placed in the temperature change of the 13 real-time monitoring linear guide of PT100 temperature sensor between the gap of linear guide 312, most
Afterwards by data collecting card 2 by the collected measurement data of physical detection equipment, it is further to be sent into LabVIEW software in host computer
Processing, display, or the collected measurement data of physical detection equipment is converted by AD conversion module, pass through radio transmitting device
It is sent into host computer and is further processed, shows.The rotating forward of the slide unit support board 311, measurement of each physical quantity, final is completed in this way
Data acquisition and signal wireless transmission.Equally, " reversion " is also such.
Further, the frequency control key on electric cabinet is pressed, it can be seen that three-phase motor 16 is set with variable-frequency governor 8
The frequency rotation set.If operated again, the alternating current for being loaded into motor stator winding both ends will be in initiation culture
Switch repeatedly between frequency control.The multistage velocity modulation speed of three-phase motor 16 is completed in this way.
Further, under normal circumstances, i.e. reversed trigger device of the inductance approach switch 12 as slide unit support board 311
When, when objective table outer edge close to right end inductance approach switch 12, rotate forward indicator light extinguish, reversion indicator light light,
The state of three-phase motor 16 switches to reversion by rotating forward.When being re-moved to the inductance approach switch 12 in left side, three-phase motor
16 operating status will change again.In the state that the inductance approach switch 12 at both ends works normally, slide unit support board
In 311 valid intervals defined by two inductance approach switches 12 in left and right, according to the Starting mode and frequency of setting, automatically
Ground switching direction and then reciprocating motion, complete the iterative motion of slide unit support board 311 in this way.
Further, when inductance approach switch 12 can not work normally due to the failure or other factors of route,
That is the trigger device alarmed as buzzing of direct acting type limit switch 15, slide unit support board 311 cross inductance approach switch 12 after
Reforwarding is dynamic, and the extruding by driven sliding block 522 is activated the alarm in electric cabinet to refer to by the fine motion contact of direct acting type limit switch 15
Show lamp, buzzing alarming lamp starts buzzing alarm while lasting flashing, remind operator's experimental provision to break down, 5S it
Afterwards, three-phase motor 16 will rework, and slide unit support board 311 is run to the direction far from the direct acting type limit switch 15,
After slide unit support board 311 moves to the middle section of entire slide unit, operator can press the progress of " stopping " button must
Trouble shooting, the maintenance wanted.The stalling and fault alarm for completing three-phase motor 16 in this way are reminded.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and
Improvement is both fallen in claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (3)
1. a kind of novel and multifunctional measurement and control integration teaching experiment platform, including mounting base (1), one-dimensional workbench, guide rail
(312), it is characterised in that: one-dimensional workbench is installed on the mounting base (1), and is installed around the one-dimensional workbench more
A sensor and ZigBee module；Inductance approach switch (12) are provided with above the one-dimensional workbench；The one-dimensional work
Slide unit support board (311) side of platform is equipped with grating sensor (3), and centre is provided on the slide unit support board (311)
Pressure sensor (14)；Described one-dimensional workbench one end is connected with photoelectric encoder (7) and photoelectric code disk (9), and the photoelectricity
Encoder (7) is fixed on ball-screw (361) by flexible clutch (512)；The phase asynchronous of one-dimensional workbench subtracts
An acceleration transducer (17) is adsorbed on speed motor (16) shell；Temperature sensor is installed on guide rail (312) bottom surface
(13), and on the inside of the guide rail (312) both ends it is separately installed with direct acting type limit switch (15).
2. novel and multifunctional measurement and control integration teaching experiment platform according to claim 1, it is characterised in that: described
The microprocessor model of ZigBee module is CC2530F256 chip, is integrated with 2.4GHZ communication standard IEEE802.15.4's
The RAM of compatible RF transceiver, online programmable flash storage and 8KB.
3. novel and multifunctional measurement and control integration teaching experiment platform according to claim 1, it is characterised in that: the multiple
The signal that acquisition comes is sent data to ZigBee receiving module by ZigBee sending module CC2530F256 by sensor
CC2530F256。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110426142A (en) * | 2019-07-02 | 2019-11-08 | 大连理工大学 | Sensing actuator based on forward and inverse piezoelectric effect |
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