CN202454137U - Electrician technique and electronic technique comprehensive experiment box - Google Patents
Electrician technique and electronic technique comprehensive experiment box Download PDFInfo
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- CN202454137U CN202454137U CN2012200260382U CN201220026038U CN202454137U CN 202454137 U CN202454137 U CN 202454137U CN 2012200260382 U CN2012200260382 U CN 2012200260382U CN 201220026038 U CN201220026038 U CN 201220026038U CN 202454137 U CN202454137 U CN 202454137U
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Abstract
The utility model discloses an electrician technique and electronic technique comprehensive experiment box which is used for solving the technical problem that the existing electrician technique experiment devices or electronic technique experiment devices are single in function. The technical scheme is that a power supply module, a mother board, a debugging functional module, sub-boards and a virtual oscilloscope are integrated into the same experiment box, each electrician technique and electronic technique experiment content to be finished is designed to be an independent sub-board, all the experiment sub-boards to be finished are respectively connected onto the mother board of the experiment box in inserting mode, an experiment is carried out by connecting a selective switch and the power supply needed in the experiment, and experiment results are connected with an external computer through a data collection and processing unit and a virtual instrument unit to directly obtain experiment result data or waveforms. The electrician technique and electronic technique comprehensive experiment box provides various fundamental, independently designed and comprehensive innovative experiment contents for completing the electrician technique and the electronic technique and provides a secondary developing and technologically innovative scientific instrument experiment platform for students, teachers and engineering technical personnel.
Description
Technical field
The utility model relates to a kind of experimental box, particularly relates to a kind of electrician and electronic technology comprehensive experiment box.
Background technology
Current experiments equipment is respectively to electrotechnics or the isolated equipment of electronic technology mostly; Electrotechnics set experimental facilities or electronic technology compound experiment equipment that few part is also arranged; But these experimental facilitiess can only be accomplished the part experiment content of relevant regulations respectively; Like electrotechnics equipment, can only accomplish simple straight circuit, alternating circuit experiment, like the experiment of checking property such as superposition principle, analysis of transient process, single-phase series testing impedance.And for example Experiment of Electronic Technology equipment all is divided into two kinds of equipment with Analog Electronics Technique Experiment and Digital Electronic Technique experiment, and the amplifying circuit in the Analog Electronics Technique Experiment equipment adopts different experimental facilitiess again with integrated operational amplifier; The various experimental facilitiess of Digital Electronic Technique all can only carry out the experiment of relatively independent content.Because the various power power supply is adopted in electrotechnics and Experiment of Electronic Technology, then each tests required surveying instrument also has very big-difference.In addition, the used electrotechnical, electronic components and parts of current experiments equipment, circuit form are by fixing, and the experimenter can only be by accomplishing the experiment content of regulation in advance under the fixed mode.
Normally used electrotechnical, electronic experimental provision majority is brassboard of each experiment; Experimental technique personnel will change a brassboard before and after each experiment; Even need build the part circuit in advance, this has not only strengthened breadboard workload, and is unfavorable for the manipulative ability of exercise student '.Discrete components and parts and discrete instrument and meter, this mode helps the experiment manipulative ability of exercise student ', but equipment control is brought difficulty, also cause easily equipment damage, lose.Aspect instrument, existing instrument has only been used part of functions wherein in the laboratory in teaching, has many functions not use; On the other hand, some function that needs does not possess again, need purchase new equipment.In addition, new experimental facilities is bought in the more new demand of experiment content, also causes the idle of some instruments and funds burden.
Summary of the invention
In order to overcome existing electrotechnics experimental facilities or the single deficiency of Experiment of Electronic Technology functions of the equipments, the utility model provides a kind of electrician and electronic technology comprehensive experiment box.This device comprises power module, motherboard, spell-checking facility module, daughter board and virtual oscilloscope.This comprehensive experiment box is integrated in same case with power module, motherboard, spell-checking facility module, daughter board and virtual oscilloscope; Each experiment content of the electrical and electronic technology that will accomplish is designed to independent daughter board; The daughter board of respectively testing that will accomplish directly is plugged on the motherboard of experimental box respectively; Experimentize through SS and the required power connection of experiment, experimental result through the data acquisition process unit, the virtual instrument unit connects with external computing machine, can directly obtain experimental result data or waveform; This comprehensive experiment box not only can supply to accomplish various basic, autonomous Design property of electrotechnics and electronic technology and synthetic innovation property experiment content, and can be the scientific instrument experimental box that student, teacher and engineering technical personnel provide secondary development, scientific and technical innovation.
The utility model solves the technical scheme that its technical matters adopted: a kind of electrician and electronic technology comprehensive experiment box are characterized in comprising power module, motherboard, debugging control module, daughter board, data collecting card and PC.Power module, debugging control module, daughter board and data collecting card adopt the connector of standard to be connected with motherboard, and data collecting card is communicated by letter with PC.Power module be system provide ± 5V, ± voltage of 12V, 0～12V; Motherboard is furnished with power interface 7, miniwatt loudspeaker and driving circuit 8, high power device interface 9, seven segment numerical from left to right, from top to bottom and shows that 10,50 pin connectors 4, circuit voltage relatively reach LED3, multi-frequency adjustable clock signal source 2, relay 11, potentiometer 12, octuple logic switch amount output circuit 1 and No. four pulsing circuits 22 that hummer 5, inverse gate drive; Air hole 6 is set, the row of the symmetrical distribution up and down pin 21 of air hole 6 in the middle of the motherboard.Power module is drawn the power interface 7 of connection terminal to the motherboard, on the motherboard power interface 7 ± 5V, ± the 12V port is the daughter board power supply.
The debugging control module comprises that function selecting input and function realize two parts.The function selecting importation provides the function selecting panel for the user, and the function implementation part adopts corresponding relays that experimental circuit is broken off or closure.Selection function has totally ten six of 0～F, except that function 0, and the corresponding relay of each function, relay quantity is designed to 15, uses a 4-16 code translator.
Data collecting card and PC are formed virtual oscilloscope, and the standard serial paralled interface of utilization carries out data acquisition, control and communicates by letter, by 8051 chip microcontroller automatic switching range functions.
Octuple logic switch amount output circuit 1 changes the high-low level output of circuit board through toggle switch.Multi-frequency adjustable clock signal source 2 clockings; The LED 3 that inverse gate drives makes up the anti-phase integrated circuit; 50 pin connectors 4 are used to connect motherboard and function selecting module 20; Circuit voltage relatively reaches hummer 5 for mother matrix provides reference voltage, when input voltage is higher than reference voltage, and buzzer warning.Miniwatt loudspeaker and driving circuit 8 are made up of independently power amplifier and loudspeaker, and both connect with lead.Seven segment numerical shows that 10 adopt common cathode to connect method.No. four pulsing circuits 22 produce the input signal pulse, comprise rising edge pulse and negative edge pulse.
Motherboard is through being bolted on the cabinet base 13.Adjustable direct supply 18, power switch 19 and function selecting module 20 are through being bolted on the control panel 14.Function selecting module 20 is installed on the control panel 14, and the output of function selecting module 20 is received on the motherboard.
Said daughter board comprises electronic technology module, circuit chip module, operational amplifier module, AC/DC circuit module, triode application circuit module, thyristor application circuit module and one-chip machine simulation circuit module.
Integrated circuit 74HC14 is adopted in said multi-frequency adjustable clock signal source 2.
The LED 3 that said inverse gate drives adopts integrated circuit 74LS04.
Said power amplifier is low-voltage audio-frequency power amplifier LM386.
Said high power device interface 9 adopts ULN280 * family chip.
Said seven segment numerical shows that 10 adopt chip MC14495.
Said No. four pulsing circuits 22 adopt Schmidt trigger 74HC14 (1) chip.
The beneficial effect of the utility model is: because the utility model is integrated in same experimental box with power module, motherboard, spell-checking facility module, daughter board and virtual oscilloscope; Each experiment content of the electrical and electronic technology that will accomplish is designed to independent daughter board; The daughter board of respectively testing that will accomplish directly is plugged on the motherboard of experimental box respectively; Experimentize through SS and the required power connection of experiment; Experimental result through the data acquisition process unit, the virtual instrument unit connects with external computing machine, directly obtained experimental result data or waveform; This comprehensive experiment box not only provides various basic, autonomous Design property of completion electrotechnics and electronic technology and synthetic innovation property experiment content, and for student, teacher and engineering technical personnel the scientific instrument experimental box of secondary development, scientific and technical innovation is provided.
Below in conjunction with embodiment the utility model is elaborated.
Description of drawings
Fig. 1 is the utility model electrician and electronic technology comprehensive experiment box structural representation.
Fig. 2 is that the utility model electrician and electronic technology comprehensive experiment box general function concern synoptic diagram.
Fig. 3 is the block diagram of data collecting card among Fig. 1.
Fig. 4 is a motherboard floor map among Fig. 1.
Fig. 5 is the utility model electrician and electronic technology comprehensive experiment box external structure.
Fig. 6 is the utility model electrician and electronic technology comprehensive experiment box control panel floor map.
Fig. 7 is the utility model electrician and electronic technology comprehensive experiment box cut-away view.
Among the figure, the output of 1-octuple logic switch amount; 2-multi-frequency adjustable clock signal source; The LED that the 3-inverse gate drives; 4-50 pin connectors; The 5-circuit voltage relatively reaches hummer; The 6-air hole; The 7-power interface; 8-miniwatt loudspeaker and driving circuit; 9-high power device interface; The 10-seven segment numerical shows; The 11-relay; The 12-potentiometer; The 13-cabinet base; The 14-control panel; The 15-ventilation slot; 16-power supply modulate circuit plate; The 17-toroidal transformer; The 18-adjustable power of direct current; The 19-power switch; The 20-function selecting module; 21-arranges pin; 22-No. four pulsing circuits.
Embodiment
With reference to Fig. 1～7, the utility model electrician and electronic technology comprehensive experiment box comprise power module, motherboard, debugging control module, daughter board, data collecting card and PC.
Power module physically shows as pcb board as a standalone module of system, adopts the connector of standard with the interface of experimental box.The power supply of experimental system is input as 220V, 50Hz alternating current, power module through step-down, rectification, filtering, voltage stabilizing later on for system provide ± 5V, ± voltage of 12V, 0～12V.According to the design of general power supply, this part will adopt earlier by the transformer pressure regulation, and filter rectification is then delivered to the conventional method design circuit of three terminal regulator output dc voltage again, and selecting fixed three terminal regulator is that core devices designs.The adjustable DC of 0～12V (VDC) adopts serial Feedback formula mu balanced circuit design proposal.
Motherboard is furnished with power interface 7, miniwatt loudspeaker and driving circuit 8, high power device interface 9, seven segment numerical from left to right, from top to bottom and shows that 10,50 pin connectors 4, circuit voltage relatively reach LED, multi-frequency adjustable clock signal source, relay 11, potentiometer 12, octuple logic switch amount output circuit 1 and No. four pulsing circuits that hummer 5, inverse gate drive; Air hole 6 is set in the middle of the motherboard, air hole 6 respectively be distributed with several rows of pin 21 up and down.Motherboard has connected other all modules, is structural core.Motherboard PCB goes up and is made up of a plurality of functional areas, also is the support platform of each experiment daughter board, and promptly daughter board is connected on the motherboard through connector.The motherboard function is the general key element of a plurality of experiments, extracts to place on the motherboard, and interface is general connector, and during experiment, motherboard links to each other with the daughter board circuit through connector, and IO interface is provided.Each experiment also has an independent circuit board, connects through connector to be inserted on the motherboard.
The debugging control module comprises that function selecting input and function realize (being that relay moves) two parts.Its effect is to make the experimenter find the problem of in time finding out when experimental result and expected results are not inconsistent, and mainly relies on the disconnection and the closed connecting and disconnecting of the circuit of realizing of relay.Function input section provides a function selecting panel for the user, and the function that the user selects is exported with corresponding signal, and two kinds of input modes of manual input and computing machine input are arranged.The function of function implementation part is that corresponding relays is moved according to the unlike signal of input, and experimental circuit is broken off or closure.Selection function has totally 16 of 0～F, and except that function 0, the corresponding relay of each function during function of promptly every selection, just has an actuating of relay.So relay quantity is designed to 15, use a 4-16 code translator to meet the demands.
Daughter board comprises electronic technology module, circuit chip module, operational amplifier module, AC/DC circuit module, triode application circuit module, thyristor application circuit module, one-chip machine simulation circuit module.The design of daughter board is in order to stay more spaces of freely bringing into play to the user, to avoid the constraint of confirmatory experiment, so above-mentioned each module can design perhaps by Students designed separately according to user's demand.
Virtual oscilloscope is made up of data collecting card and PC data processor.Utilize the serial paralled interface of microcomputer standard to carry out data acquisition, control and communicate by letter; Use enhancing parallel port (EPP) to carry out data acquisition; For energy measurement surpasses the signal of A/D input range, and improve the precision of measuring small-signal, realize the function of automatic switching range by 8051 Single-chip Controlling.Software section comprises the program of the display waveform that moves on 8051 programs and the PC.SCM program realize to receive PC start and order, range conversion such as sampling rate be set, start A/D, response A/D interrupts reading transformation result, writes the result to functions such as PC EPP mouths.The PC program reads the 8051 measurement result data seen off from EPP, carry out necessary processing after, show with graphics mode.8051 use the interface circuit of a slice 8255A programmable parallel I/O interface realization and PC LPT.
Power module provides ± 5V, ± 12V, 0～12V voltage, receive on the experimental box through line.The operator builds experimental circuit according to experiment purpose on experimental box, do experiment preliminary work.The operator designs given function input, and whether debugging control module decision relay moves and the result is delivered to motherboard.After the experiment beginning, on the motherboard ± 5V, ± the 12V port is the daughter board power supply, while receiving relay actuating signal, and to daughter board transmission corresponding signal.After experiment was accomplished, display module or virtual instrument on the template passed to the operator with experimental result.This just accomplishes a function course, if the operator need continue experiment, then repeats above action.
Data collecting card adopts external, and data collecting card is gathered voltage data, communicates by letter with PC then, is handled and display waveform by the data processor on the PC.A/D converter input voltage commonly used generally is no more than positive and negative 20 volts scope, and ambipolar input voltage is smaller.And need the measured voltage parameter can surpass the input range that A/D allows on the experimental box, so data collecting card has the branch compression functions.When tested voltage ratio hour, the A/D conversion accuracy is not high enough, needs carry out processing and amplifying to signal, just is necessary to add enlarging function circuit able to programme.After over-sampling maintenance and A/D conversion, just can data be delivered to the PC interface again, these processes are all controlled by 8051 SCM programs.PC program reading of data and processes and displays.
In octuple logic switch amount output 1, directly toggle switch can change the high-low level output of circuit board.When pin in the middle of the switch and 0 volt of connection, logic is output as 0 (low); When pin and 5V connected in the middle of the switch, logic was output as 1 (height).Each level output end is connected to pull-up resistor, and its effect is a current limliting.The purpose in multi-frequency adjustable clock signal source 2 is that the generation frequency is the clock signal of 60～600Hz and two scopes of 0.5～5Hz, and its scope is realized that by toggle switch these clock signals can be used for sequential circuit.Adopted in the present embodiment integrated circuit 74HC14 ,+5V power supply produces time clock.In the LED 3 that inverse gate drives, select 74LS04 to make up the anti-phase integrated circuit, show output terminal level height at light emitting diode of output terminal design, during input signal, the light emitting diode state is not for extinguishing.The effect of 50 pin connectors 4 is to connect motherboard and function selecting module 20, selects double single-row straight cutting Pin contact to connect, and four metallic support are installed at the plug two ends, and is stressed to guarantee.Circuit voltage relatively reaches hummer 5 for mother matrix provides reference voltage, when input voltage is higher than reference voltage, and buzzer warning.Present embodiment is selected special-purpose voltage comparable chip, connects at the comparator circuit output terminal and draws resistance, output termination hummer.The effect of air hole 6 is auxiliary heat dissipations.Power interface 7 is for circuit provides power interface, only needs to draw connection terminal from power module and gets final product to motherboard, comprise+5V ,-5V ,+12V and-four kinds of 12V.Miniwatt loudspeaker and driving circuit 8 are made up of independently power amplifier and loudspeaker, can both be coupled together with lead, and that power amplifier is selected for use is low-voltage audio-frequency power amplifier LM386.High power device interface 9 adopts ULN280 * family chip, and the effect of eight light emitting diodes is the height that show the output terminal current potential, can prevent the excessive diode that burns out of electric current in the chip output series limiting resistor.Seven segment numerical shows in 10 selects chip MC14495 for use, adopts common cathode to connect method.Relay 11 for circuit provides two controlled relays, select Darlington transistor in its driving circuit, when being input as low level, not conducting of Darlington transistor, relay is not worked; When being input as high level, Darlington transistor conducting, relay work.Potentiometer 12 is made up of three simple potential devices, and its effect is that each potentiometer all provides three contacts for experimental circuit provides variable resistance or potentiometer.Row's pin 21 is selected for use single direct insertion, and symmetry is installed in the motherboard center.The effect of No. four pulsing circuits 22 is to produce the input signal pulse, comprises rising edge pulse and negative edge pulse, and switch is realized by key switch, selects Schmidt trigger 74HC14 (1) chip.When pressing switch, will produce simultaneously and rise and the two kinds of pulses that descend.
In the present embodiment, casing, control panel, all to adopt 5mm steel plate, the connected mode between each sheet metal plate be that bolt connects, and cabinet base is installed four identical rubber washers, and the installation site is apart from each edge line 20mm of base.
Claims (8)
1. electrician and electronic technology comprehensive experiment box is characterized in that: comprise power module, motherboard, debugging control module, daughter board, data collecting card and PC; Power module, debugging control module, daughter board and data collecting card adopt the connector of standard to be connected with motherboard, and data collecting card is communicated by letter with PC; Power module be system provide ± 5V, ± voltage of 12V, 0～12V; Motherboard is furnished with power interface (7), miniwatt loudspeaker and driving circuit (8), high power device interface (9), seven segment numerical from left to right, from top to bottom and shows that (10), 50 pin connectors (4), circuit voltage relatively reach LED (3), multi-frequency adjustable clock signal source (2), relay (11), potentiometer (12), octuple logic switch amount output circuit (1) and No. four pulsing circuits (22) that hummer (5), inverse gate drive; Air hole (6) is set, the row of the symmetrical distribution up and down pin (21) of air hole (6) in the middle of the motherboard; Power module is drawn the power interface (7) of connection terminal to the motherboard, power interface on the motherboard (7) ± 5V, ± the 12V port is the daughter board power supply; The debugging control module comprises that function selecting input and function realize two parts; The function selecting importation provides the function selecting panel for the user, and the function implementation part adopts corresponding relays that experimental circuit is broken off or closure; Selection function has totally ten six of 0～F, except that function 0, and the corresponding relay of each function, relay quantity is designed to 15, uses a 4-16 code translator; Data collecting card and PC are formed virtual oscilloscope, and the standard serial paralled interface of utilization carries out data acquisition, control and communicates by letter, by 8051 chip microcontroller automatic switching range functions; Octuple logic switch amount output circuit (1) changes the high-low level output of circuit board through toggle switch; Multi-frequency adjustable clock signal source (2) clocking; The LED (3) that inverse gate drives makes up the anti-phase integrated circuit; 50 pin connectors (4) are used to connect motherboard and function selecting module (20); Circuit voltage relatively reaches hummer (5) for mother matrix provides reference voltage, when input voltage is higher than reference voltage, and buzzer warning; Miniwatt loudspeaker and driving circuit (8) are made up of independently power amplifier and loudspeaker, and both connect with lead; Seven segment numerical shows that (10) employing common cathode connects method; No. four pulsing circuits (22) produce the input signal pulse, comprise rising edge pulse and negative edge pulse; Motherboard is through being bolted on the cabinet base (13); Adjustable direct supply (18), power switch (19) and function selecting module (20) are through being bolted on the control panel (14); Function selecting module (20) is installed on the control panel (14), and the output of function selecting module (20) is received on the motherboard; Ventilation slot (15) is arranged at the bottom of cabinet base (13); The inside distribution power modulate circuit plate (16) of cabinet base (13), toroidal transformer (17) and adjustable power of direct current (18); Power supply modulate circuit plate (16) occupies a left side, and toroidal transformer (17) occupies right, connects through lead between the two; Be connected with power lead between toroidal transformer (17) and the adjustable power of direct current (18).
2. electrician according to claim 1 and electronic technology comprehensive experiment box is characterized in that: said daughter board comprises electronic technology module, circuit chip module, operational amplifier module, AC/DC circuit module, triode application circuit module, thyristor application circuit module and one-chip machine simulation circuit module.
3. electrician according to claim 1 and electronic technology comprehensive experiment box is characterized in that: integrated circuit 74HC14 is adopted in said multi-frequency adjustable clock signal source (2).
4. electrician according to claim 1 and electronic technology comprehensive experiment box is characterized in that: the LED (3) that said inverse gate drives adopts integrated circuit 74LS04.
5. electrician according to claim 1 and electronic technology comprehensive experiment box is characterized in that: said power amplifier is low-voltage audio-frequency power amplifier LM386.
6. electrician according to claim 1 and electronic technology comprehensive experiment box is characterized in that: said high power device interface (9) adopts ULN280 * family chip.
7. electrician according to claim 1 and electronic technology comprehensive experiment box is characterized in that: said seven segment numerical shows (10) employing chip MC14495.
8. electrician according to claim 1 and electronic technology comprehensive experiment box is characterized in that: said No. four pulsing circuits (22) adopt Schmidt trigger 74HC14 (1) chip.
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| CN2012200260382U CN202454137U (en) | 2012-01-19 | 2012-01-19 | Electrician technique and electronic technique comprehensive experiment box |
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| CN2012200260382U CN202454137U (en) | 2012-01-19 | 2012-01-19 | Electrician technique and electronic technique comprehensive experiment box |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542888A (en) * | 2012-01-19 | 2012-07-04 | 西北工业大学 | Comprehensive electrotechnical and electronic technique experiment platform |
| CN103886794A (en) * | 2014-03-30 | 2014-06-25 | 浙江大学 | Intelligent digital electronic experimental box |
| CN109615991A (en) * | 2019-01-22 | 2019-04-12 | 东北大学秦皇岛分校 | A kind of integrated virtual instrument and its operation method based on digital-to-analog circuit experiment |
| CN109671321A (en) * | 2019-02-21 | 2019-04-23 | 北京科技大学 | A kind of resistance measurement Experimental Teaching Method and its system |
| CN110111660A (en) * | 2019-05-22 | 2019-08-09 | 安徽升隆电气有限公司 | A kind of electric arc simulation demonstrating apparatus |
| CN110120174A (en) * | 2019-05-24 | 2019-08-13 | 湖南理工学院 | A kind of new-type circuit and system experimental device and application method |
| CN114999289A (en) * | 2022-06-21 | 2022-09-02 | 山东师范大学 | Modular electric experimental box with detachable expansion module |
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2012
- 2012-01-19 CN CN2012200260382U patent/CN202454137U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542888A (en) * | 2012-01-19 | 2012-07-04 | 西北工业大学 | Comprehensive electrotechnical and electronic technique experiment platform |
| CN103886794A (en) * | 2014-03-30 | 2014-06-25 | 浙江大学 | Intelligent digital electronic experimental box |
| CN109615991A (en) * | 2019-01-22 | 2019-04-12 | 东北大学秦皇岛分校 | A kind of integrated virtual instrument and its operation method based on digital-to-analog circuit experiment |
| CN109671321A (en) * | 2019-02-21 | 2019-04-23 | 北京科技大学 | A kind of resistance measurement Experimental Teaching Method and its system |
| CN109671321B (en) * | 2019-02-21 | 2021-10-22 | 北京科技大学 | Resistance measurement experiment teaching method and system |
| CN110111660A (en) * | 2019-05-22 | 2019-08-09 | 安徽升隆电气有限公司 | A kind of electric arc simulation demonstrating apparatus |
| CN110120174A (en) * | 2019-05-24 | 2019-08-13 | 湖南理工学院 | A kind of new-type circuit and system experimental device and application method |
| CN114999289A (en) * | 2022-06-21 | 2022-09-02 | 山东师范大学 | Modular electric experimental box with detachable expansion module |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20120926 Termination date: 20140119 |