CN105989768A - YAG laser welding power source teaching experiment and level examination platform - Google Patents
YAG laser welding power source teaching experiment and level examination platform Download PDFInfo
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- CN105989768A CN105989768A CN201510394613.2A CN201510394613A CN105989768A CN 105989768 A CN105989768 A CN 105989768A CN 201510394613 A CN201510394613 A CN 201510394613A CN 105989768 A CN105989768 A CN 105989768A
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Abstract
The invention discloses a YAG laser welding power source teaching experiment and level examination platform. A YAG laser welding entity power source, a student experiment and examination low-voltage small-current simulation circuit and a student experiment and examination low-voltage small-current fault simulation module are all electrically connected with an upper computer through a CAN bus, wherein the student experiment and examination low-voltage small-current fault simulation module includes a detection circuit and a fault simulation circuit. According to the YAG laser welding power source teaching experiment and level examination platform of the invention, one set of low-voltage small-current simulation circuit under safe voltage is utilized to simulate the synchronous working of an entity high-voltage large-current power source circuit and an entity power source. When the YAG laser welding power source teaching experiment and level examination platform of the invention is applied to teaching, not only can students see the entity of a YAG laser welding power source, but also various circuit faults can be generated through automatic simulation, so that the students can find fault points to eliminate faults, and the problem solving ability of the students can be cultivated.
Description
Technical field
The invention belongs to laser welding commercial Application technical field, be specifically related to a kind of YAG laser welding power supply education experiment and
Cross level examination platform.
Background technology
Owing to YAG laser welding power supply is the equipment of a set of high-voltage large current, there is certain safety danger in application in teaching
Dangerous, the teaching equipment of current YAG laser welding power supply is mainly put down the YAG laser welding power supply of a commercial Application
Paving is installed, and is then placed within a transparent display box closed, and student can only see and can not operate circuit, or parent by left-hand seat
Test from starting connection line, thus limit the training of the operating ability of student.
Content of the invention
It is an object of the invention to provide a kind of YAG laser welding power supply education experiment and cross level examination platform, above-mentioned to solve
The problem proposing in background technology.
For achieving the above object, the present invention provides following technical scheme: a kind of YAG laser welding power supply education experiment and cross level
Examination platform, including host computer is electrically connected with, student experimenting examination low pressure low current fault analog module, YAG laser welding
Entity power supply, student experimenting examination low-voltage small area analysis analog circuit, testing circuit, fault simulation circuit, described YAG
Laser welding entity power supply, student experimenting examination low-voltage small area analysis analog circuit, student experimenting examination low pressure low current fault
Analog module is all electrically connected with host computer by CAN, described student experimenting examination low pressure low current fault simulation mould
Block 22 includes testing circuit and fault simulation circuit.
Preferably, the overall circuit of described YAG laser welding entity power supply includes 220V electric main, big electric current hollow work(
Rate inductor, LP1 be xenon lamp, IGBT module, loop fly-wheel diode, IGBT Drive Protecting Circuit, main control module,
Hall current transformer module, one end of described 220V electric main is connected between D1, D2, and described C1, C2 divide
Not connecting in D1, D2, the other end of described 220V electric main is connected between C1, C2, and described Hall current is mutual
Sensor module is connected with main control module and big electric current hollow power inductor respectively, described IGBT Drive Protecting Circuit respectively with
Main control module and IGBT module connect, and described xenon lamp is connected between IGBT module and big electric current hollow power inductor,
Described loop fly-wheel diode is connected to the two ends of Hall current transformer module and xenon lamp.
Preferably, described student experimenting examination low-voltage small area analysis analog circuit includes 9V AC power, small area analysis power electricity
Sense, great power LED, small-power IGBT, loop fly-wheel diode, Hall current transformer, IGBT Drive Protecting Circuit,
Experimental circuit main control module, double contact relay, described experimental circuit main control module with respectively at IGBT drive module and greatly
Power LED connects, and one end of described 9V AC power is connected between C1, C2, another of described 9V AC power
End is connected between D1, D2, and described Hall current transformer is connected to the two ends of small area analysis power inductance and D1, described
Loop fly-wheel diode is connected to great power LED and the two ends of Hall current transformer, and described IGBT Drive Protecting Circuit is even
Being connected between main control module and small-power IGBT, in described circuit, each line both increases a double contact relay,
Described relay contact is connected on the two ends of connecting line.
The technique effect of the present invention and advantage: this invention is by the low-voltage low current breadboardin being enclosed within safe voltage with
The high voltage and high current power circuit of entity works with entity line lock.Apply the invention to, in teaching, to allow
The raw entity seeing YAG laser welding power supply, and can also allow student in the case of being perfectly safe under analog circuit platform
Build the electronic circuit as entity power circuit to test, and can on-line automatic examine before student's power on operation
Measure whether correct electronic circuit connects, thus avoid because connecting consequence that is improper and that cause electronic devices and components to burn out；This
Invention automatic imitation can also produce various fault and allow student look for trouble point to fix a breakdown, the solution of training student
Certainly ability；Meanwhile can automatically obey the order when crossing level examination and set a question in exam pool, automatically student examination achievement and
The electronic-circuit diagram being started to build can preserve in the way of document, consults the files reservation foundation for student performance.
Brief description
Fig. 1 is present configuration schematic diagram；
Fig. 2 is the overall circuit of YAG laser welding entity power supply；
Fig. 3 is that student carries out starting experimental implementation circuit；
Fig. 4 is testing circuit；
Fig. 5 is a kind of connection of electronic circuit mistake；
Fig. 6 is a kind of connection of electronic circuit mistake；
Fig. 7 is a kind of connection of electronic circuit mistake.
In figure: 21 host computers are electrically connected with, 22 student experimenting examination low pressure low current fault analog modules, 23YAG laser
Welding entity power supply, 24 student experimenting examination low-voltage small area analysis analog circuits, 25 testing circuits, 26 fault simulation circuit.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of not making creative work
Execute example, broadly fall into the scope of protection of the invention.
The invention provides a kind of YAG laser welding power supply education experiment as shown in Figure 1 and cross level examination platform, including on
Position machine is electrically connected with the 21st, student experimenting and takes an examination low pressure low current fault analog module the 22nd, YAG laser welding entity power supply the 23rd,
Student experimenting examination low-voltage small area analysis analog circuit the 24th, testing circuit the 25th, fault simulation circuit 26, described YAG swashs
Photocoagulation entity power supply the 23rd, student experimenting examination low-voltage small area analysis analog circuit the 24th, student experimenting examination low pressure small area analysis
Fault simulation module 22 is all electrically connected with host computer 21 by CAN, described student experimenting examination low pressure small area analysis
Fault simulation module 22 includes testing circuit 25 and fault simulation circuit 26.
Overall circuit such as Fig. 2 of master-plan block diagram such as Fig. 1 of the present invention, YAG laser welding entity power supply, in figure 4
For the input of 220V electric main, the bus DC voltage Vbus producing after D1, D2 and C1, C2 voltage multiplying rectifier is about
For 620V, L1 is the big electric current hollow power inductor of 180uH, and LP1 is xenon lamp, and Q1 is the IGBT of 400A/1200V
Module, D3 is loop fly-wheel diode, and 1 is IGBT Drive Protecting Circuit, and 2 is main control module, and 3 is 400A for rated current
Hall current transformer module.Circuit job control principle is: set given reference current, by Hall current transformer
Measuring main circuit current and feeding back to main controller, master controller controls IGBT by PWM, makes the electric current flowing through xenon lamp in loop steady
Due to the reference current setting.
Owing to YAG laser welding entity power bus voltage Vbus reaches 620V, main circuit current maximum can reach 400A,
So big voltage x current is not suitable for being applied to teaching experiment, so adding one in this solution to be enclosed within safe voltage
Under low-voltage small area analysis experimental circuit, its circuit theory is identical with the circuit theory of entity power supply, simulated experiment circuit
Module and entity power circuit block carry out communication by CAN and realize that operational control synchronizes；Simultaneously in order to online
Automatically detect the electronic circuit of the built connection of student, in circuit the two ends of each connecting line respectively concatenate one controllable
Switch, this controllable switch can use but be not limited to MOSFET, relay etc., and this solution employs one pair and touches
Head relay, relay contact is respectively connected on the two ends of connecting line, so just can be this connecting line when detecting connecting line
Keep apart with other connecting lines in circuit, it is possible to individually measure whether this connecting line correctly connects.Carry out for student
Start experimental implementation circuit as it is shown on figure 3, in figure 5 be 9V AC power, its bus producing after voltage multiplying rectifier
DC voltage Vbus is about 25V, and L2 is the small area analysis power inductance of 180uH, and LP2 is before a rated current is 1A
To the great power LED that pressure drop is 6V for replacing xenon lamp, Q2 is small-power IGBT of 10A/600V, and D4 is loop afterflow
Diode, 6 is the Hall current transformer that rated current is 1A, and 7 is IGBT Drive Protecting Circuit, and 8 is experimental circuit master
Control module, S is relay normally closed interlock.Its job control principle is identical with the control principle of entity power supply.In order to allow experiment
Analog circuit and entity power circuit synchronous operation work, make student feel control analog circuit just as at controlled entity power supply
Equally, by CAN, experimental simulation circuit and entity power circuit are linked together and communicated, operation setting entity electricity
Parameter on source, the master controller on entity power supply will be sent to experimental simulation circuit same parameter by CAN communication
Master controller, operation perform entity power supply each action can by CAN notify experimental simulation circuit, so
Just reach general synchronization.
In order to the electronic connecting line road of on-line real-time measuremen experimental simulation circuit, in addition it is also necessary to increase testing circuit, such as Fig. 4
Shown in, the intersection point between connecting line and connecting line is referred to as end points, and the line socket on experiment porch is connected with end points, experiment electricity
In road, each end points has several connecting lines to be attached thereto, and this end points is just provided with several terminals of connecting wire socket, or at most has more
One terminals of connecting wire socket (such as terminal block over the ground has more as other detection terminals), detects each
Connecting line is with end points for detection unit, and each end points has 17 such a testing circuits, and in figure, S is that relay is normally closed tactile
Head, 10,11 is experiment porch end points line socket, and 12,13 for needing correct connecting line, and 9 in 23 are for by testing
The outlet line detection voltage of analog circuit master control module controls, magnitude of voltage is 5V, 14 in another end points 21 of line
For by experimental simulation circuit master control module controls output enable detection level signal, U1 is a comparator, Vref for than
Compared with device reference voltage--2.5V, 15 is comparator output signal.Connecting line Cleaning Principle for convenience of explanation, agrees as follows art
Language: 1. at inspection end points: detecting whether this end points has the end points of connecting line at inspection end points, such as Fig. 4 with other end points
In be about to whether detection end points 10 and other end points (such as end points 11, the 19th, 22) have connecting line to connect, then end points 10 is
At inspection end points.2. scan end points: whether non-other end points at inspection end points of Scanning Detction have connecting line to be connected title with at inspection end points
For scanning end points.3. end-point detection voltage signal: experimental simulation circuit master control module controls export inspection end points 23 in 9
Voltage, when end-point detection voltage signal is 5V effectively, invalid during 0V；Any time has and an only end-point detection electricity
Pressure signal is effective, or void in whole.4. end points scan enable signal: the output of experimental simulation circuit master control module controls enables
Signal is to the 14 detection level signals scanning in end points 21, it is allowed to detect whether this scanning end points has connecting line with at inspection end points
Connect, effective for enabling signal, for enabling invalidating signal during low level when level signal is high level；Any time have and
Only have a connecting line detection and enable signal effectively, or void in whole；During Scanning Detction scanning end points, at inspection end points
9 end-point detection voltages in 23 keep effectively.Any time is with the end-point detection voltage of end point and end points scan enable signal
Can not effectively simultaneously.
Connection detection circuit operation principle is as follows: after student connects circuit to be tested, and presses start button and allows circuit
Work, after main control module detects enabling signal, now main control module does not also allow experimental circuit to work, its first output signal
Allow all actuating of relay, all normally-closed contacts are disconnected, then end-point detection one by one, such as end points 10 and end in Fig. 4
Between point 11,12 lines are for correctly connecting, and detect now the connection status of end points 10, and now end points 10 is for examining end points,
Master controller exit point detectable voltage signals is effectively on end points 10, and exit point scan enable signal effectively arrives end simultaneously
On point 11, if 12 have correct connecting line, now because 14 is high level, PNP triode Q3E-C pole connects,
So end-point detection voltage signal 9 through D5, R1 (=1K), connecting line 12, R2 (=1K), PNP triode Q3,
R3 (=100K), (R4=30K, R5=30K, R6=10K) is eventually connected to ground, so will at 16 voltages producing
Can be higher than reference voltage Vref, comparator U1 output 15 will export a high level；If 12 do not have connecting line to connect
The then output of 15 is exactly low level.So when main control module exit point detectable voltage signals to 9 is effective, end points scanning makes
Can signal to 14 effectively after, detect that high level then 12 just has correct connecting line to connect 15, if low level just
Connecting line is not had to connect.Experimental simulation main circuit controller output end spot scan afterwards enables signal Scanning Detction successively, and other remain
More than the end points that is not detected by, if 15 having high level output in the 17 of other end points, this end points has even at inspection end points with this
Wiring connects, and does not then connect if low level.
Fig. 5, Fig. 6, Fig. 7 are the schematic diagram of electronic circuit incorrect link.
If being intended only as student experimenting application, then experimental simulation circuit just can complete the simulation of various line fault, because of
Having a relay connected for each connecting line in circuit, these relays can individually control again.But
It is that if the circuit that student is connected is incorrect, then circuit cannot normally work when carrying out level examination, so circuit
Simulated failure student cannot be allowed to carry out the exercise question examination of malfunction elimination.In order to solve this problem, this complete equipment adds again
Circuit kit and experimental simulation circuit are the same, referred to as fault simulation circuit, and each in fault simulation circuit connects
All corresponding with the experimental simulation circuit end points of the end points of line connects, and such fault simulation circuit just looks like experimental simulation circuit
Shadow is the same.Under normal circumstances, all relay contacts in fault simulation circuit are to disconnect, and fault simulation circuit is not
Working, thus not interfering with the operation of experimental simulation circuit, only when malfunction elimination exercise question is taken an examination, it just participates in
Work.When fault simulation circuit works, all relays of experimental simulation circuit are all off, make experimental simulation circuit not
Affect the properly functioning of fault simulation circuit.Certain relay break contact of master control module controls just simulation in fault simulation circuit
It has the circuit being associated and occur in that fault, when student have found the tram of trouble point, just illustrate that it can correctly eliminate event
Barrier.
Cross the management such as proposition and student examination archives of level examination to student for the ease of teacher, host computer has special application
Management software is used for writing proposition exam pool and student examination performance history database, issues proposition storehouse to YAG by CAN
Laser welding entity power supply main control module, the total marks of the examination of student are uploaded to by entity power supply main control module also by CAN
Host computer database.Owing to this programme achieves the online automatic detection that student connects experimental circuit, such student examination is wanted
Asking the automatic archiving of connection line figure of starting completing to become possibility, experimental simulation circuit is carried out by entity power supply main control module
Controlling completely, all control instructions of experimental simulation circuit are all to be performed by entity power supply main control module, connection line of taking an examination
Online automatic detection completed by entity power supply main control module and experimental circuit main control module are collaborative, each in connection line
Line, each components and parts weaves into unique coding, and entity power supply is uploaded to host computer these codings, and host computer manages
The dxf file format that software is converted into CAD it automatically saves.
It finally it is noted that the foregoing is only the preferred embodiments of the present invention, is not limited to the present invention, to the greatest extent
The present invention has been described in detail by pipe with reference to previous embodiment, and for a person skilled in the art, it is still permissible
Technical scheme described in foregoing embodiments is modified, or carries out equivalent to wherein portion of techniques feature, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (3)
1. YAG laser welding power intelligent education experiment and excessively a level examination platform, including host computer is electrically connected with
(21), student experimenting examination low pressure low current fault analog module (22), YAG laser welding entity power supply (23),
Student experimenting examination low-voltage small area analysis analog circuit (24), testing circuit (25), fault simulation circuit (26), its
Be characterised by: described YAG laser welding entity power supply (23), student experimenting examination low-voltage small area analysis analog circuit (24),
Student experimenting examination low pressure low current fault analog module (22) is all electrically connected with host computer (21) by CAN,
Described student experimenting examination low pressure low current fault analog module (22) includes testing circuit (25) and fault simulation circuit (26).
2. a kind of YAG laser welding power supply demonstration device for teaching according to claim 1, it is characterised in that:
The overall circuit of described YAG laser welding entity power supply (23) includes 220V electric main, big electric current hollow power inductance
Device, LP1 are xenon lamp, IGBT module, loop fly-wheel diode, IGBT Drive Protecting Circuit, main control module, Hall electricity
Current transformer module, one end of described 220V electric main is connected between D1, D2, described C1, C2 respectively at D1,
D2 connects, and the other end of described 220V electric main is connected between C1, C2, and described Hall current transformer module is divided
Be not connected with main control module and big electric current hollow power inductor, described IGBT Drive Protecting Circuit respectively with main control module and
IGBT module connects, and described xenon lamp is connected between IGBT module and big electric current hollow power inductor, the afterflow of described loop
Diode is connected to the two ends of Hall current transformer module and xenon lamp.
3. a kind of YAG laser welding power supply demonstration device for teaching according to claim 1, it is characterised in that:
Described student experimenting examination low-voltage small area analysis analog circuit (22) includes 9V AC power, small area analysis power inductance, big
Power LED, small-power IGBT, loop fly-wheel diode, Hall current transformer, IGBT Drive Protecting Circuit, experiment
Circuit main control module, double contact relay, described experimental circuit main control module with respectively at IGBT drive module and high-power
LED connects, and one end of described 9V AC power is connected between C1, C2, and the other end of described 9V AC power connects
Between D1, D2, described Hall current transformer is connected to the two ends of small area analysis power inductance and D1, and described loop continues
Stream diode is connected to great power LED and the two ends of Hall current transformer, and described IGBT Drive Protecting Circuit is connected to main
Between control module and small-power IGBT, in described circuit, each line both increases a double contact relay, described continues
Electrical contact is connected on the two ends of connecting line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510394613.2A CN105989768B (en) | 2015-07-08 | 2015-07-08 | YAG laser welding power supply teaching experiment and examination platform of passing a grade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510394613.2A CN105989768B (en) | 2015-07-08 | 2015-07-08 | YAG laser welding power supply teaching experiment and examination platform of passing a grade |
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| CN105989768A true CN105989768A (en) | 2016-10-05 |
| CN105989768B CN105989768B (en) | 2020-05-19 |
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| CN115273598A (en) * | 2022-09-28 | 2022-11-01 | 合肥中科汇达智慧科技有限公司 | Automatic line fault setting and wiring judgment method |
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| CN105989768B (en) | 2020-05-19 |
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