CN109817071A - Portable DC motor experiment case - Google Patents
Portable DC motor experiment case Download PDFInfo
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- CN109817071A CN109817071A CN201910275765.9A CN201910275765A CN109817071A CN 109817071 A CN109817071 A CN 109817071A CN 201910275765 A CN201910275765 A CN 201910275765A CN 109817071 A CN109817071 A CN 109817071A
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Abstract
A kind of Portable DC motor experiment case.It includes cabinet and is mounted on the intracorporal instrument main panel of case, controller, A/D converting unit, power supply and switch unit, DC meter unit, adjustable resistance unit, motor and the unit that tests the speed, camera unit, keyboard and liquid crystal display；The invention has the advantages that small in size, light-weight, easy to remove and carrying can be used for the place that laboratory and classroom etc. have 220V alternating current；Easy to repair, experimental box is designed using general purpose instrument, is bought and is replaced in time convenient for user；Price is low, takes up little area, and is easily able to everyone one group of experimentation, guarantees the experiment effect of each student；Protection and warning function, experimental box have electric leakage, overcurrent, the early warning of over-voltage acousto-optic and defencive function, prevent personnel's electric shock and module damage in experiment；It is monitored, plays back and evaluates convenient for experimentation of the teacher to each student；Inquiry verification is carried out to experimentation data convenient for teacher, prevents from plagiarizing mutually between student.
Description
Technical field
The invention belongs to technical field of experiment equipment, more particularly to a kind of Portable DC motor experiment case.
Background technique
" Electrical Motor " is the Main Course of the profession such as electrical, automation, most domestic institution of higher learning and occupation
Technical college has opened up correlated curriculums such as " Electrical Motor ", " Electrical Machinery & Towage " and " motor control ".Current each school generally adopts
" motor and the electrical technology experimental bench " of the domestic profession Jiao Yi manufacturer production such as " it is bright ", " Seeking Truth " is used to set as experimental teaching
It is standby.That there are volumes is big for traditional experimental bench, price is high, maintenance is difficult and is inconvenient to the disadvantages of moving, and is limited by lab space, often
A laboratory can only configure 10 or so, and often 3-5 people shares an experimental bench when experiment, and experiment effect is poor, and is difficult to
Everyone experimental implementation is objectively evaluated.In recent years, there are also " the motor control experiments that producer is proposed miniaturization
Case ", mainly comprising control panel, driving plate and control motor in the experimental box, experimental subjects is mainly brshless DC motor, permanent magnetism
Synchronous motor, asynchronous machine etc. are more suitable for the design and debugging of motor control algorithms, are not suitable for Principle of Electric Engine and characteristic
Experimental teaching.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of Portable DC motor experiment casees.
In order to achieve the above object, Portable DC motor experiment case provided by the invention includes cabinet and is mounted on cabinet
Interior instrument main panel, controller, A/D converting unit, power supply and switch unit, DC meter unit, adjustable resistance unit, electricity
Machine and test the speed unit, camera unit, keyboard and liquid crystal display；Wherein, the cabinet is made of bottom and flip lid；Instrument
Main panel is horizontally set on rear side in the inside of bottom；Power supply and switch unit, DC meter unit and adjustable resistance unit are equal
It is arranged on instrument main panel；Controller is connected by A/D converting unit with DC meter unit and motor and the unit that tests the speed, together
When connect with keyboard, liquid crystal display and camera unit；Adjustable resistance unit is for adjusting motor and motor in the unit that tests the speed
Resistance value；Power supply and switch unit are used for as electrical component power supply each in entire experimental box and switch control.
The front left of bottom, including the first DC motor with separate excitation, second is arranged in the motor and the unit that tests the speed
DC motor with separate excitation and revolution counter；First DC motor with separate excitation and the second DC motor with separate excitation are arranged side by side and rotation axis
Relatively and pass through shaft coupling connection；The measuring head of revolution counter is in contact with the rotation axis of any DC motor with separate excitation.
The camera unit includes the first camera and second camera；Wherein flip lid is arranged in the first camera
Front is along medial surface；The inside top surface face top of flip lid is arranged in second camera；And camera unit also passes through routing
Device is connected with teacher side computer.
The adjustable resistance unit includes the first slide rheostat R1, the second slide rheostat R2, third sliding variable resistance
Device R3, the 4th slide rheostat R4 and four fuses；Four fuses pass through conducting wire and first to fourth sliding variable resistance respectively
Device R1, R2, R3, R4 series connection.
The DC meter unit includes the first D.C. voltmeter, the second D.C. voltmeter, the first DC ammeter, the
Two DC ammeters, the first DC milliammeter, the second DC milliammeter and six alarm indicators；Six alarm indicator difference
Directly by conducting wire and the first D.C. voltmeter, the second D.C. voltmeter, the first DC ammeter, the second DC ammeter, first
Flow milliammeter, the series connection of the second DC milliammeter.
The power supply and switch unit includes the socket connected by several conducting wires, earth leakage protective device, two double-poles pair
Throw switch, field power supply, over-voltage indicator light, armature power supply, transfer switch, supply voltage dial gauge, overcurrent indicator light, work
Make indicator light and 5V direct-current switch power supply；The wherein external 220V AC power source of socket；Armature power supply and field power supply pass through conducting wire
It is connected with socket, while is returned respectively with the armature circuit and excitation of the first DC motor with separate excitation and the second DC motor with separate excitation
The shunt connection of excitation wind on road connects, and is equipped on the downside of armature power supply and field power supply and is turned round by two coupled gears of conducting wire
Sub switch, wherein the foot that two gears being located on the downside of armature power supply turn round sub switch passes through the DC output end of conducting wire and armature power supply
Son connection, another foot are wired to the circuit where armature power supply；Two gears on the downside of field power supply are turned round son and are opened
The foot closed is connected by the DC output terminal of conducting wire and field power supply, and another foot is wired to where field power supply
Circuit；The effect that two gears turn round sub switch is used to the open and close of control armature power supply and field power supply；Two double-poles are double
Throw switch is respectively two gear double-point double-throw switch S1 and S2, wherein a foot of bipod among two gear double-point double-throw switch S1
Be connected to one end of the second slide rheostat R2, another foot of intermediate bipod be connected to the armature of the first DC motor with separate excitation around
Group end, left side bipod are connected in parallel on the DC output end of armature power supply, and right edge bipod is shorted；In two gear double-point double-throw switch S2
Between a foot of bipod be connected to one end of the 4th slide rheostat R4, another foot of intermediate bipod is connected to the second separate excitation direct current
The armature winding end of motivation, left side bipod are connected in parallel on the DC output end of armature power supply, and right edge bipod is shorted；Work light with
Armature power supply and field power supply series connection, armature power supply and field power supply it is normally-open after, work light connected in series is immediately
It is glittering；Armature power supply is connected with over-voltage indicator light and overcurrent indicator light, and is respectively equipped with and over-voltage indicator light and overcurrent indicator light
Pass through the concatenated torsion sub switch of conducting wire；5V direct-current switch power supply is used for as control unit power supply each in this experimental box；Supply voltage
Dial gauge and transfer switch are connect by conducting wire with armature power supply or field power supply, supply voltage dial gauge and armature power supply
Or the specific connection type of field power supply is as follows: the direct current of the red line end of supply voltage dial gauge and 5V direct-current switch power supply is just
Pole connection, the black line end of supply voltage dial gauge are connect with the direct current cathode of 5V direct-current switch power supply, and 5V dc switch electricity
Source and armature power supply or field power supply altogether, i.e. the direct current cathode of 5V direct-current switch power supply and armature power supply or field power supply
The white line end of the connection of voltage output end cathode, supply voltage dial gauge is connect with the anode of armature power supply or field power supply；Power supply
Change-over switch is that three gear single-pole double throws turn round sub switch, and wherein intermediate terminal passes through the white line end of conducting wire and supply voltage dial gauge
It connects, the voltage output anode of one end connection armature power supply in another both ends, one end connects the voltage output anode of field power supply；
The open and close of armature power supply or field power supply are controlled by the switching of transfer switch, and can be referred in supply voltage
Show and shows armature voltage or excitation voltage on table；After armature power supply and field power supply are normally-open, work instruction connected in series
Lamp work once electrified immediately；Earth leakage protective device is connect by conducting wire with armature power supply or field power supply, and overload and short-circuit protection function are played
Energy.
The controller uses STM32 single-chip microcontroller；The inside top surface Middle face of flip lid is arranged in liquid crystal display, uses
The LCD1602 liquid crystal display of 16 × 2 characters.
The D.C. voltmeter selects three-wire type number to show voltage dial gauge, and DC ammeter and DC milliammeter are equal
Four-wire type number is selected to show electric current dial gauge.
First camera and second camera are all made of high definition wireless camera.
The maximum value of first to fourth the slide rheostat R1, R2, R3, R4 is all different.
Portable DC motor experiment case provided by the invention has the advantages that
(1) small in size, light-weight, easy to remove and carrying can be used for laboratory and classroom etc. with 220V alternating current
Place；
(2) easy to repair, experimental box is designed using general purpose instrument, is bought and is replaced in time convenient for user；
(3) price is low, takes up little area, and is easily able to everyone one group of experimentation, guarantees the experiment effect of each student；
(4) protection and warning function, experimental box have electric leakage, overcurrent, the early warning of over-voltage acousto-optic and defencive function, prevent from testing
Middle personnel's electric shock and module damage；
(5) video monitoring function is monitored, plays back and evaluates convenient for experimentation of the teacher to each student；
(6) experimentation data are carried out inquiry verification convenient for teacher, prevent student by experimental data storage and query function
Between plagiarize mutually.
Detailed description of the invention
Fig. 1 is Portable DC motor experiment box structure schematic diagram provided by the invention.
Fig. 2 is Portable DC motor experiment case Instrumental main panel top view provided by the invention.
Fig. 3 is control unit composition figure in Portable DC motor experiment case provided by the invention.
Fig. 4 is D.C. voltmeter wiring diagram in Portable DC motor experiment case provided by the invention.
Fig. 5 is DC ammeter wiring diagram in Portable DC motor experiment case provided by the invention.
Fig. 6 is direct current generator characteristic test principle sketch in Portable DC motor experiment case provided by the invention.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1-Fig. 6, Portable DC motor experiment case provided by the invention includes cabinet and is mounted in cabinet
Instrument main panel 37, controller 38, A/D converting unit 39, power supply and switch unit 40, DC meter unit 41, adjustable electric
Hinder unit 42, motor and the unit 43 that tests the speed, camera unit 44, keyboard 31 and liquid crystal display 34；Wherein, the cabinet by
Bottom 35 and flip lid 36 are constituted；Instrument main panel 37 is horizontally set on rear side in the inside of bottom 35；Power supply and switch unit 40,
DC meter unit 41 and adjustable resistance unit 42 are arranged on instrument main panel 37；Controller 38 passes through A/D converting unit
39 are connected with DC meter unit 41 and motor and the unit 43 that tests the speed, at the same with keyboard 31, liquid crystal display 34 and camera list
Member 44 connects；Adjustable resistance unit 42 is used to adjust the resistance value of motor with motor in the unit 43 that tests the speed；Power supply and switch unit 40
For for electrical component each in entire experimental box power supply and switch control.
The front left of bottom 35, including the first DC motor with separate excitation is arranged in the motor and the unit 43 that tests the speed
25, the second DC motor with separate excitation 30 and revolution counter 33；First DC motor with separate excitation 25 and the second DC motor with separate excitation 30
It is arranged side by side and rotation axis is opposite and is connected by shaft coupling 32；The measuring head of revolution counter 33 and any DC motor with separate excitation
Rotation axis is in contact, and can intuitively show steering and the revolving speed of DC motor with separate excitation.
The camera unit 44 includes the first camera 28 and second camera 29；Wherein the first camera 28 is arranged
Experimental implementation process in the front of flip lid 36 along medial surface, for whole record operator；Second camera 29 is arranged
On the inside top surface face top of flip lid 36, whether mode of operation and the operator for observing operator are practical rule
Fixed operator；And camera unit 44 is also connected by router with teacher side computer.
The adjustable resistance unit 42 includes the first slide rheostat R1, the second slide rheostat R2, third sliding change
Hinder device R3, the 4th slide rheostat R4 and four fuses 24；Four fuses 24 are sliding by conducting wire and first to fourth respectively
Dynamic rheostat R1, R2, R3, R4 series connection；It is straight that different slide rheostats by conducting wire is connected to separate excitation as needed when experiment
In galvanic electricity motivation in the shunt connection of excitation wind or armature circuit of energized circuit；When route overloads, fuse 24 plays protection circuit
Effect.
The DC meter unit 41 includes the first D.C. voltmeter 13, the second D.C. voltmeter 15, the first direct current peace
Train table 16, the second DC ammeter 17, the first DC milliammeter 18, the second DC milliammeter 19 and six alarm indicators 14；
Six alarm indicators 14 pass through conducting wire and the first D.C. voltmeter 13, the second D.C. voltmeter 15, the first DC amps respectively
Table 16, the second DC ammeter 17, the first DC milliammeter 18, the series connection of the second DC milliammeter 19；D.C. voltmeter selects three
Wire type number shows that voltage dial gauge, DC ammeter and DC milliammeter select four-wire type number to show electric current dial gauge.
The power supply and switch unit 40 includes the socket 3 connected by several conducting wires, earth leakage protective device 4, two pairs
Double-pole double throw switch 5, field power supply 6, over-voltage indicator light 7, armature power supply 8, transfer switch 9, supply voltage dial gauge 10, mistake
Flow indicator light 11, work light 12 and 5V direct-current switch power supply；The wherein external 220V AC power source of socket 3；8 He of armature power supply
Field power supply 6 is connected by conducting wire with socket 3, at the same respectively with the first DC motor with separate excitation 25 and the second separate excitation direct current drive
The armature circuit of machine 30 and the shunt connection of excitation wind of energized circuit connect, and the downside of armature power supply 8 and field power supply 6 be equipped with it is logical
It crosses two coupled gears of conducting wire and turns round sub switch, wherein the foot that two gears for being located at 8 downside of armature power supply turn round sub switch is logical
It crosses conducting wire to connect with the DC output terminal of armature power supply 8, another foot is wired to the circuit where armature power supply 8；Position
The foot that two gears in 6 downside of field power supply turn round sub switch is connect by conducting wire with the DC output terminal of field power supply 6, another
Foot is wired to the circuit where field power supply 6；The effect that two gears turn round sub switch is used to control 8 He of armature power supply
The open and close of field power supply 6；Wherein, socket 3 selects model CW2C-10A-T socket switch filter, earth leakage protective
Device 4 selects number of poles 2P, the earth leakage circuit breaker of rated current 10A；Two double-point double-throw switch 5 are respectively that two gear double-poles are double
Throw switch S1 and S2, wherein a foot of bipod is connected to the second slide rheostat R2's among two gear double-point double-throw switch S1
One end, another foot of intermediate bipod are connected to the armature winding end of the first DC motor with separate excitation 25, and left side bipod is connected in parallel on
The DC output end of armature power supply 8, right edge bipod are shorted；A foot of bipods is connected to the among two gear double-point double-throw switch S2
One end of four slide rheostat R4, another foot of intermediate bipod are connected to the armature winding end of the second DC motor with separate excitation 30,
Left side bipod is connected in parallel on the DC output end of armature power supply 8, and right edge bipod is shorted；Field power supply 6 and the selection type of armature power supply 8
Number be SH-CM220-DCS speed control system for DC motor, output DC voltage range 10-220V it is adjustable, now design armature power supply 8
Output voltage with field power supply 6 is 220V；Work light 12 is connected with armature power supply 8 and field power supply 6, armature power supply
8 and field power supply 6 it is normally-open after, work light 12 connected in series is glittering immediately；Armature power supply 8 and over-voltage indicator light 7
It connects with overcurrent indicator light 11, and is respectively equipped with and is opened with over-voltage indicator light 7 and overcurrent indicator light 11 by concatenated torsion of conducting wire
It closes；When over-voltage occurs in output voltage, over-voltage indicator light 7 is glittering, and corresponding sub switch of turning round is allocated to by operator immediately then
"Off", armature power supply 8 and the connection of socket 3 are already off at this time, then adjust armature voltage value to suitable size；When load electricity
When flowing through greatly and being more than defined maximum current, overcurrent indicator light 11 is glittering, and operator will turn round sub switch accordingly immediately then
It is allocated to "Off" and increases load resistance using a certain slide rheostat, increase the resistance value of slide rheostat series connection in circuit
Greatly；5V direct-current switch power supply is used for as control unit power supply each in this experimental box；Supply voltage dial gauge 10 and power supply conversion are opened
It closes 9 to connect by conducting wire with armature power supply 8 or field power supply 6, supply voltage dial gauge 10 and armature power supply 8 or field power supply 6
Specific connection type it is as follows: the red line end of supply voltage dial gauge 10 is connect with the direct current anode of 5V direct-current switch power supply,
The black line end of supply voltage dial gauge 10 is connect with the direct current cathode of 5V direct-current switch power supply, and 5V direct-current switch power supply and electricity
Pivot power supply 8 or field power supply 6 altogether, i.e. the electricity of the direct current cathode of 5V direct-current switch power supply and armature power supply 8 or field power supply 6
Negative pole of output end connection is pressed, the white line end of supply voltage dial gauge 10 is connect with the anode of armature power supply 8 or field power supply 6；Electricity
Source changeover switch 9 is that three gear single-pole double throws turn round sub switch, and wherein intermediate terminal passes through conducting wire and supply voltage dial gauge 10
White line end connects, and the voltage output anode of one end connection armature power supply 8 in another both ends, one end connects the voltage of field power supply 6
Output cathode；Control the open and close of armature power supply 8 or field power supply 6 by the switching of transfer switch 9, and can be with
Armature voltage or excitation voltage are shown on supply voltage dial gauge 10；After armature power supply 8 and field power supply 6 are normally-open, with
The work once electrified immediately of concatenated work light 12；Earth leakage protective device 4 is connected by conducting wire and armature power supply 8 or field power supply 6
It connects, plays overload and short-circuit protection function.
The controller 38 uses STM32 single-chip microcontroller.
The inside top surface Middle face of flip lid 36 is arranged in the liquid crystal display 34, using the LCD1602 of 16 × 2 characters
Liquid crystal display.
First camera 28 and second camera 29 are all made of high definition wireless camera.
The maximum value of first to fourth the slide rheostat R1, R2, R3, R4 is all different.
Now the application method of Portable DC motor experiment case provided by the invention is described below:
1) before testing, flip lid 36 is opened by student first, the external 220V AC power source on socket 3 checks that each power supply is opened
Close, whether the switch of component is in close state, such as in the open state, must close immediately, earth leakage protective device 4 is kept it turning on
State.
2) when starting experiment, student is observed on liquid crystal display 34 by information such as the student numbers of 31 typing of keyboard oneself
Clock information it is whether accurate, if clock information is wrong, need to be adjusted by keyboard 31, later by 28 He of the first camera
Second camera 29 is powered, and teacher side computer carries out the configuration of WLAN, selects camera WiFi signal and connects.
3) when student needs to carry out the speed regulation experiment of a certain DC motor with separate excitation, by the one of the first slide rheostat R1
End is connected to the DC output negative pole end of field power supply 6, and the other end is connected to the red thick line end of the first DC ammeter 16, with first
The excitation winding of DC motor with separate excitation 25 is connected, and one end of the second slide rheostat R2 is connected to two gear double-pole double throw and is opened
A foot of bipod among S1 is closed, the other end is connected to the red thick line end of the second DC ammeter 17, with the first separate excitation direct current drive
The armature winding of machine 25 is connected, change the resistance value of the first slide rheostat R1 and the resistance value of the second slide rheostat R2, it can be achieved that
The speed regulation of DC motor with separate excitation.
When needing to carry out dc motor when the electronic mechanical property under regenerative braking state is tested, by two gears pair
Double-pole double throw switch S1 is closed to armature power end, and two gear double-point double-throw switch S2 are closed to shorted end, by the first slide rheostat R1
It connects with the shunt connection of excitation wind of energized circuit on the first DC motor with separate excitation 25, the second slide rheostat R2 and the first separate excitation is straight
Armature circuit series connection where galvanic electricity motivation 25, by energized circuit on third slide rheostat R3 and the second dc motor 30
Shunt connection of excitation wind series connection connects the 4th slide rheostat R4 with the armature circuit where the second dc motor 30, according to experiment
It is required that the resistance value for successively adjusting four slide rheostats can realize DC motor with separate excitation under electronic and regenerative braking state
Mechanical property experiment.
When needing to measure the voltage of load, the white line end of a certain voltmeter is passed through into conducting wire and measurement load (such as armature
Power supply 8) anode connection, black line end is common ground, and red line end is connected by the direct current anode of conducting wire and 5V direct-current switch power supply
It connects；When needing to measure the electric current of load, the red thick line end of a certain ammeter (DC ammeter or DC milliammeter) is passed through
Conducting wire is connect with one end of measurement load, and the other end seals in circuit by conducting wire, and red filament end passes through conducting wire and 5V dc switch
The direct current anode of power supply connects, and black filament end is connect by conducting wire with the direct current cathode of 5V direct-current switch power supply, black thick line
End is connect by conducting wire with the direct current cathode of 5V direct-current switch power supply.Above-mentioned each DC meter is equipped with alarm protection electricity
Road, when the object measured by it is more than the maximum range of ammeter, alarm indicator 14 is then i.e. glittering, and operator should adopt immediately
Fetch protection measure.Accident such as occurs in experiment, should cut off the power immediately, investigates thoroughly problem and after dealing carefully with, could continue into
Row experiment.
4) after testing, according to the requirement of guide book of experiment, each power supply is successively cut off, final cutting general supply will
Component, which arranges, to be resetted.
Claims (10)
1. a kind of Portable DC motor experiment case, it is characterised in that: the Portable DC motor experiment case includes cabinet
Be mounted on the intracorporal instrument main panel (37) of case, controller (38), A/D converting unit (39), power supply and switch unit (40),
DC meter unit (41), adjustable resistance unit (42), motor and the unit that tests the speed (43), camera unit (44), keyboard (31)
With liquid crystal display (34)；Wherein, the cabinet is made of bottom (35) and flip lid (36)；Instrument main panel (37) level is set
Set the rear side in the inside of bottom (35)；Power supply and switch unit (40), DC meter unit (41) and adjustable resistance unit
(42) it is arranged on instrument main panel (37)；Controller (38) passes through A/D converting unit (39) and DC meter unit (41)
And motor is connected with the unit that tests the speed (43), while connecting with keyboard (31), liquid crystal display (34) and camera unit (44)；It can
Resistance unit (42) are adjusted to be used to adjust motor and the resistance value for the motor in unit (43) of testing the speed；Power supply and switch unit (40) are for being
Each electrical component power supply and switch control in entire experimental box.
2. Portable DC motor experiment case according to claim 1, it is characterised in that: the motor and the unit that tests the speed
(43) front left in bottom (35), including the first DC motor with separate excitation (25), the second DC motor with separate excitation are set
(30) and revolution counter (33)；First DC motor with separate excitation (25) and the second DC motor with separate excitation (30) are arranged side by side and rotate
Axis is opposite and is connected by shaft coupling (32)；The measuring head of revolution counter (33) connects with the rotation axis of any DC motor with separate excitation
Touching.
3. Portable DC motor experiment case according to claim 1, it is characterised in that: the camera unit (44)
Including the first camera (28) and second camera (29)；Wherein the first camera (28) is arranged in the front of flip lid (36) along interior
On side；Second camera (29) is arranged on the inside top surface face top of flip lid (36)；And camera unit (44) also passes through
Router is connected with teacher side computer.
4. Portable DC motor experiment case according to claim 1, it is characterised in that: the adjustable resistance unit
(42) include the first slide rheostat R1, the second slide rheostat R2, third slide rheostat R3, the 4th slide rheostat R4 and
Four fuses (24)；Four fuses (24) pass through conducting wire and first to fourth slide rheostat R1, R2, R3, R4 string respectively
Connection.
5. Portable DC motor experiment case according to claim 1, it is characterised in that: the DC meter unit
It (41) include the first D.C. voltmeter (13), the second D.C. voltmeter (15), the first DC ammeter (16), the second DC amps
Table (17), the first DC milliammeter (18), the second DC milliammeter (19) and six alarm indicators 14；Six alarm indicators
(14) pass through conducting wire and the first D.C. voltmeter (13), the second D.C. voltmeter (15), the first DC ammeter (16), the respectively
Two DC ammeters (17), the first DC milliammeter (18), the second DC milliammeter (19) series connection.
6. Portable DC motor experiment case according to claim 1 or 2, it is characterised in that: the power supply and switch
Unit (40) includes the socket (3) connected by several conducting wires, earth leakage protective device (4), two double-point double-throw switch (5), excitations
Power supply (6), over-voltage indicator light (7), armature power supply (8), transfer switch (9), supply voltage dial gauge (10), overcurrent instruction
Lamp (11), work light (12) and 5V direct-current switch power supply；The wherein external 220V AC power source of socket (3)；Armature power supply (8)
Be connected by conducting wire with socket (3) with field power supply (6), at the same respectively with the first DC motor with separate excitation (25) and the second separate excitation
The armature circuit of dc motor (30) and the shunt connection of excitation wind of energized circuit connect, and armature power supply (8) and field power supply (6)
Downside be equipped with and turn round sub switch by coupled two gears of conducting wire, wherein being located at two gears on the downside of armature power supply (8)
The foot for turning round sub switch is connect by conducting wire with the DC output terminal of armature power supply (8), and another foot is wired to armature
Circuit where power supply (8)；The foot that two gears on the downside of field power supply (6) turn round sub switch passes through conducting wire and field power supply
(6) DC output terminal connection, another foot are wired to the circuit where field power supply (6)；Two gears turn round sub switch
Effect be used to control armature power supply (8) and field power supply (6) open and close；Two double-point double-throw switch (5) are respectively
For two gear double-point double-throw switch S1 and S2, wherein a foot of bipod is connected to second among two gear double-point double-throw switch S1
One end of slide rheostat R2, another foot of intermediate bipod are connected to the armature winding end of the first DC motor with separate excitation (25),
Left side bipod is connected in parallel on the DC output end of armature power supply (8), and right edge bipod is shorted；Among two gear double-point double-throw switch S2
One foot of bipod is connected to one end of the 4th slide rheostat R4, and another foot of intermediate bipod is connected to the second separate excitation direct current drive
The armature winding end of machine (30), left side bipod are connected in parallel on the DC output end of armature power supply (8), and right edge bipod is shorted；Work refers to
Show that lamp (12) is connected with armature power supply (8) and field power supply (6), armature power supply (8) and field power supply (6) it is normally-open after, with
Concatenated work light (12) it is glittering immediately；Armature power supply (8) and over-voltage indicator light (7) and overcurrent indicator light (11) are gone here and there
Connection, and be respectively equipped with and pass through the concatenated torsion sub switch of conducting wire with over-voltage indicator light (7) and overcurrent indicator light (11)；5V dc switch
Power supply is used for as control unit power supply each in this experimental box；Supply voltage dial gauge (10) and transfer switch (9) are by leading
Line is connect with armature power supply (8) or field power supply (6), supply voltage dial gauge (10) and armature power supply (8) or field power supply (6)
Specific connection type it is as follows: the direct current anode of the red line end of supply voltage dial gauge (10) and 5V direct-current switch power supply connects
It connects, the black line end of supply voltage dial gauge (10) is connect with the direct current cathode of 5V direct-current switch power supply, and 5V dc switch electricity
Source and armature power supply (8) or field power supply (6) altogether, i.e., the direct current cathode of 5V direct-current switch power supply and armature power supply (8) or
The voltage output end cathode of field power supply (6) connects, the white line end of supply voltage dial gauge (10) and armature power supply (8) or excitation
The anode connection of power supply (6)；Transfer switch (9) is that three gear single-pole double throws turn round sub switch, and wherein intermediate terminal is by leading
Line is connect with the white line end of supply voltage dial gauge (10), and the voltage output of one end connection armature power supply (8) in another both ends is just
Pole, one end connect the voltage output anode of field power supply (6)；Armature power supply is controlled by the switching of transfer switch (9)
(8) or the open and close of field power supply (6) armature voltage or excitation electricity can be shown, and on supply voltage dial gauge (10)
Pressure；After armature power supply (8) and field power supply (6) are normally-open, work light connected in series (12) work once electrified immediately；Leakage
Non-electricity protector (4) is connect by conducting wire with armature power supply (8) or field power supply (6), and overload and short-circuit protection function are played.
7. Portable DC motor experiment case according to claim 1, it is characterised in that: the controller (38) uses
STM32 single-chip microcontroller；The inside top surface Middle face in flip lid (36) is arranged in liquid crystal display (34), using 16 × 2 characters
LCD1602 liquid crystal display.
8. Portable DC motor experiment case according to claim 5, it is characterised in that: the D.C. voltmeter is selected
Three-wire type number shows that voltage dial gauge, DC ammeter and DC milliammeter select four-wire type number to show electric current instruction
Table.
9. Portable DC motor experiment case according to claim 3, it is characterised in that: first camera (28)
High definition wireless camera is all made of with second camera (29).
10. Portable DC motor experiment case according to claim 4, it is characterised in that: described first to fourth is sliding
Dynamic rheostat R1, the maximum value of R2, R3, R4 are all different.
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| CN201910275765.9A CN109817071A (en) | 2019-04-08 | 2019-04-08 | Portable DC motor experiment case |
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| CN201910275765.9A CN109817071A (en) | 2019-04-08 | 2019-04-08 | Portable DC motor experiment case |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113129711A (en) * | 2020-01-15 | 2021-07-16 | 深圳市跨一科技有限公司 | Physical experiment electricity device |
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| CN202838802U (en) * | 2012-10-25 | 2013-03-27 | 济南重成自动化技术有限公司 | Direct-current motor practical training platform |
| CN202976625U (en) * | 2012-12-11 | 2013-06-05 | 武汉钢铁(集团)公司 | Multifunctional experimental box |
| CN203588558U (en) * | 2013-08-28 | 2014-05-07 | 南京康托信息科技有限公司 | Motor control experiment box |
| CN105575237A (en) * | 2016-03-03 | 2016-05-11 | 中国矿业大学 | Expandable power electronics teaching experiment device |
| CN108630076A (en) * | 2018-07-09 | 2018-10-09 | 广西南宁市晨启科技有限责任公司 | A kind of signal trains external member with control class group |
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| CN202838802U (en) * | 2012-10-25 | 2013-03-27 | 济南重成自动化技术有限公司 | Direct-current motor practical training platform |
| CN202976625U (en) * | 2012-12-11 | 2013-06-05 | 武汉钢铁(集团)公司 | Multifunctional experimental box |
| CN203588558U (en) * | 2013-08-28 | 2014-05-07 | 南京康托信息科技有限公司 | Motor control experiment box |
| CN105575237A (en) * | 2016-03-03 | 2016-05-11 | 中国矿业大学 | Expandable power electronics teaching experiment device |
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| CN113129711A (en) * | 2020-01-15 | 2021-07-16 | 深圳市跨一科技有限公司 | Physical experiment electricity device |
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Application publication date: 20190528 |