CN209570846U - A kind of computer control system experimental box - Google Patents

Abstract

A kind of computer control system experimental box, belongs to field of experiment equipment.The utility model, which provides, a kind of can adapt to new computer program, multiple functional, more than experimental project computer control system experimental box.In the utility model, bread board is used for draw calculation machine hookup, the output end of power module and peripheral module is connect with the input terminal of Computer Experiments circuit, adjustable resistance and on-off connection control unit both ends respectively with Computer Experiments circuit connection, the input terminal of analog module, modulation module and digital module is connect with the output end of Computer Experiments circuit, and the output end of the input terminal of analog module, modulation module and digital module is connect with computer.The utility model is mainly used for testing different computer control circuits.

Description

A kind of computer control system experimental box

Technical field

The utility model belongs to field of experiment equipment, and in particular to is related to a kind of electronics, Electric Specialty in computer control Experimental facilities used in system experimentation processed.

Background technique

As the upgrading of social industrial technology and the technique leading of high and new technology industry develop, industry for academia, The quality of education of especially university has the demand updated, and not requiring nothing more than student has theoretical knowledge sturdy understanding, also wants Going to school has stronger manipulative ability and flexible knowledge use ability.Currently, university's specialized courses mainly has theory to give lessons, is real The forms such as teaching, pre-internship time are tested, wherein teaching Process of experiment is most Link of Practice Teaching of student's contact, through profession Class is given lessons process, is also bonded with student institute learning theory knowledge the most, can be made classmate's direct feel production stream in an experiment Journey, the ability of practice of abundant training student.

It revises, is updated especially for information knowledges such as electronics, electric informations faster special by a few wheel textbook informationizations For industry, most experiment ancillary equipment faces old or unmatched situation currently on the market, in order to abundant for meter Experiment ancillary equipment in terms of calculation machine programming Control, the utility model proposes a kind of computer control system experimental boxs.Experimental box It on the basis of completing current specialized course's knowledge use, is controlled for computer programming, option is tested in new control, deepens student couple In the understanding of knowledge, student's programming Control ability is promoted.

It is therefore desirable to which a kind of can adapt to new computer program, multiple functional, more than experimental project computer control System experimentation case.

Utility model content

The utility model is directed to a kind of existing computer control system experimental box and does not adapt to existing computer program, function Can less, the few defect of pilot project, providing a kind of can adapt to new computer program, more than multiple functional, experimental project Computer control system experimental box.

A kind of technical solution of computer control system experimental box involved in the utility model is as follows:

A kind of computer control system experimental box involved in the utility model, it include power module, peripheral module, can Adjust resistance, on-off connection control unit, bread board, analog module, modulation module and digital module；The power module is used It powers in hookup, the peripheral module with outside source for connecting, and the on-off connection control unit is for controlling The on-off of signal processed, the bread board are output and input for drawing hookup, the analog module for analog quantity, The modulation module is used for modulated signal, and the digital module is output and input for digital quantity；The power module and The input terminal of hookup on the output end and bread board of peripheral module connects, and it is single that the adjustable resistance connects control with on-off The both ends of member are connect with the hookup on bread board respectively, the analog module, modulation module and digital module it is defeated Enter end to connect with the output end of the hookup on bread board, the analog module, modulation module and digital module it is defeated The output end for entering end is connect with computer.

Further: the power module includes power switch, power supply indicator, power interface and power supply interface；It is described One end of power switch is connect with power interface, and the other end of the power switch and one end of power supply indicator connect, described The other end of power supply indicator and the input terminal of power supply interface connect.

Further: the peripheral module include VGA peripheral hardware microcomputer interface, AXIS Peripheral Interface, CHDO Peripheral Interface, ENCI Peripheral Interface, ETAIO Peripheral Interface and PCSIO Peripheral Interface, on-off connection control unit include on-off indicator light, On-off switch and make break contact, one end of the make break contact are sequentially connected in series on-off switch and on-off indicator light and make break contact Other end forming circuit.

Further: the analog module includes analog input port and analog output port, the modulation mould Block includes PWM modulation excitation, and the digital module includes digital voltage I/O interface.

A kind of beneficial effect of computer control system experimental box involved in the utility model is:

A kind of computer control system experimental box, improves current electronics, Electric Specialty involved in the utility model The effect of giving lessons of experimental teaching promotes the programming Control ability of student, by adding analog/digital voltage I/O interface, makes to succeed in one's scheme Calculate machine control system experimentation in electrical signal collection it is more convenient, add polymorphic type microcomputer Peripheral Interface, make experimental box with Microcomputer is connected, and in conjunction with control software simulink, shows voltage waveform, it can be achieved that multivoltage/electric current is defeated using virtual oscilloscope Enter comparison of wave shape to show, reduce the peripheral hardwares such as oscillograph, simplifies experiment flow；By soft-combination of hardware, not only can intuitively see It examines, record experimentation, and can use software programming control experimentation, obtain ideal output waveforms；In PID closed loop control In system, realize that soft-hardware is adjusted jointly, optimal control process；Extension circuit on-off control unit can facilitate realization to close The conversion of ring-open loop circuit, while its LED light also can access circuital current break-make situation where circuit display, application In the monitoring of connecting and disconnecting of the circuit failure, it is ensured that experimentation is errorless.

Detailed description of the invention

Fig. 1 is a kind of computer control system experimental box panel schematic diagram；

Fig. 2 is the circuit diagram of power module；

Fig. 3 is the wiring schematic diagram of analog input port；

Fig. 4 is the wiring schematic diagram of AXIS Peripheral Interface；

Fig. 5 is the wiring schematic diagram of ENCI Peripheral Interface；

Fig. 6 is the circuit diagram of on-off connection control unit；

Fig. 7 is the wiring schematic diagram of digital voltage I/O interface；

Fig. 8 is the wiring schematic diagram of analog output port；

Fig. 9 is the wiring schematic diagram of power supply indicator；

Figure 10 is the wiring schematic diagram of on-off indicator light；

In figure, 1 is VGA peripheral hardware microcomputer interface, and 2 be power switch, and 3 be power supply indicator, and 4 be power interface, and 5 be power supply Interface, 6 be AXIS Peripheral Interface, and 7 be CHDO Peripheral Interface, and 8 be ENCI Peripheral Interface, and 9 be ETAIO Peripheral Interface, and 10 are PCSIO Peripheral Interface, 11 be adjustable resistance, and 12 be on-off indicator light, and 13 be on-off switch, and 14 be make break contact, and 15 be bread Plate, 16 be analog input port, and 17 be analog output port, and 18 motivate for PWM modulation, and 19 be digital voltage I/O interface.

Specific embodiment

The technical solution of the utility model is described further below with reference to embodiment, however, it is not limited to this, all That technical solutions of the utility model are modified or replaced equivalently, without departing from technical solutions of the utility model spirit and Range should all cover in the protection scope of the utility model.

Embodiment 1

It is illustrated with reference to Fig. 1 the present embodiment, in the present embodiment, a kind of computer control system involved in the present embodiment is real Tryoff, it include power module, peripheral module, adjustable resistance 11, on-off connection control unit, bread board 15, analog module, Modulation module and digital module；The power module is used to power to hookup, and the peripheral module is used to believe with outside The connection of number source, the on-off connection control unit are used to control the on-off of signal, the bread board 15 for drawing hookup, The analog module is output and input for analog quantity, and the modulation module is used for modulated signal, the digital module For outputting and inputting for digital quantity；The output end of the power module and peripheral module and the hookup on bread board 15 The both ends of input terminal connection, the adjustable resistance 11 and on-off connection control unit connect with the hookup on bread board 15 respectively It connects, the input terminal of the analog module, modulation module and digital module and the output end of the hookup on bread board 15 Connection, the output end of the input terminal of the analog module, modulation module and digital module are connect with computer.It is arranged such Purpose be that experimental box interface is all placed on test panel, including Peripheral Interface part, indicating section, analog/digital letter Number input/output section etc. cooperates corresponding chip circuit, passes through the interaction between module and realizes different computer control The purpose to be realized of circuit.

Embodiment 2

Illustrate the present embodiment in conjunction with Fig. 2 and embodiment 1, in the present embodiment, a kind of computer involved in the present embodiment Control system experimental box, the power module include power switch 2, power supply indicator 3, power interface 4 and power supply interface 5；Institute The one end for stating power switch 2 is connect with power interface 4, and the other end of the power switch 2 and one end of power supply indicator 3 connect It connects, the other end of the power supply indicator 3 is connect with the input terminal of power supply interface 5.The purpose of such setting is to pass through power supply mould Block realizes different voltage supplies, to meet the needs of electric energy.

Embodiment 3

Illustrate the present embodiment in conjunction with Fig. 3, Fig. 4, Fig. 5 and embodiment 2, in the present embodiment, one involved in the present embodiment Kind of computer control system experimental box, the peripheral module include VGA peripheral hardware microcomputer interface 1, AXIS Peripheral Interface 6, outside CHDO If interface 7, ENCI Peripheral Interface 8, ETAIO Peripheral Interface 9 and PCSIO Peripheral Interface 10, the on-off connects control unit packet On-off indicator light 12, on-off switch 13 and make break contact 14 are included, one end of the make break contact 14 is sequentially connected in series on-off switch 13 It is formed into a loop with the other end of on-off indicator light 12 and make break contact 14.The purpose of such setting is that the peripheral module is used for Different information are received, Peripheral Interface plays bridge beam action between microcomputer and peripheral equipment, mainly there are following functions: Addressing function: one of port in multiple I/O interfaces is selected；The deposit of data and pooling feature；Data converting function；Connection Network function；Interrupt management or DMA management function；Order control.The on-off connection control unit is for controlling computer control The energization of the sub-circuit of circuit.

Embodiment 4

Illustrate the present embodiment in conjunction with Fig. 6-Figure 10 and embodiment 3, in the present embodiment, one kind involved in the present embodiment Computer control system experimental box, the analog module include analog input port 16 and analog output port 17, institute Stating modulation module includes PWM modulation excitation 18, and the digital module includes digital voltage I/O interface 19.The VGA peripheral hardware is micro- The model CN19/CN20CN21GT2-400-ACC2 of machine interface 1.The purpose of such setting is, the analog module can be with It acquires analog quantity (such as voltage, electric current, thermocouple, thermal resistance, the numerical value such as temperature), is carried out by data/address bus and computer mutual Logical, communication protocol uses MODBUS rtu protocol, realizes unification with industrial field data acquisition and docks, programming is got up also very square Just.

A kind of computer control system experimental box involved in through this embodiment, achievable following experiment:

(1) D/A switch is tested

Requirement of experiment students number/converter DAC0832 chip performance, application method and corresponding hardware electricity Road, and the waveform of process control D/A output is write, so that it is exported periodic triangular wave.In an experiment using power supply interface 5 + 5V and GND interface are the power supply of DAC0832 circuit, and digital voltage I/O interface 19 provides digital voltage input for DAC0832 circuit The analog voltage amount of amount, DAC0832 circuit output connects analog input port 16, and AXIS1 interface 6, USB interface 1 connect micro- Machine, the simulation numerical quantity that receives analog input port 16 import simulink software, in screen virtual oscillograph with The form of waveform shows that control waveform process programs realization in simulink.

(2) analog/digital conversion is tested

The chip that analog/digital conversion experiment is used is ADC0809, and experimental box interface resource used is identical as D/A switch, makes With+the 5V of power supply interface 5 and GND interface be ADC0809 circuit power supply, this experiment in use analog output port 17 for ADC0809 circuit provides analog voltage input quantity, and ADC0809 circuit output port connection number word voltage I/O interface 19 exports number Word voltage, digital voltage waveform are finally shown in the virtual oscilloscope of microcomputer.

(3) sampling is tested with holding

The conversion-for the discrete signal that sampling is controlled with holding requirement of experiment student understanding analog signal to computer sampled Journey is sampled using the sine wave signal that analog/digital conversion module generates analog output port with certain sampling period, send to Virtual oscilloscope is shown, compares the waveform (distortion level) for inputting and exporting under Different sampling period.Specific conversion and display Process is similar to the experiment of above-mentioned analog/digital conversion.

(4) standard PID control is tested

Standard PID control requirement of experiment student understand and grasp the pid control algorithm of control system virtual representation formula, after Method for building up and corresponding circuit design principle to difference equation, observation and analytical standard PID control system in, P, I, D Influence of the parameter to output waveform；Experiment includes A/D conversion and D/A conversion links, and effect is to extract analog quantity in circuit to carry out It calculates, and introduces next stage control, it is identical as experiment (1) (2) operating process, it needs to utilize in control P, I, D parametric procedure Adjustable resistance 11 adjusts circuit output, adjustable resistance 11 numerical value being suitble to according to analog oscilloscope waveform selection.Pass through The parameters such as programming setting time constant, carry out optimal control process in simulink software.

(5) temperature scaling factor is tested

Temperature scaling factor experiment needs student according to requirement of experiment, i.e. heating rate (rise time), overshoot, adjusting Time and error select P, I, D control parameter, integration control amount to realize temperature scaling factor, observe temperature control curve；The reality Test similar to experiment (4) to PID control link, introduce practical control scene --- temperature control needs to connect temperature in an experiment Module is spent, and establishes closed-loop system.

Claims (4)

1. a kind of computer control system experimental box, which is characterized in that it includes power module, peripheral module, adjustable resistance (11), on-off connection control unit, bread board (15), analog module, modulation module and digital module；The power module For powering to hookup, for connecting with outside source, the on-off connection control unit is used for the peripheral module The on-off of signal is controlled, the bread board (15) is used for the input of analog quantity for drawing hookup, the analog module And output, the modulation module are used for modulated signal, the digital module is output and input for digital quantity；The power supply The output end of module and peripheral module is connect with the input terminal of the hookup on bread board (15), the adjustable resistance (11) and The both ends of on-off connection control unit are connect with the hookup on bread board (15) respectively, the analog module, modulation mould The input terminal of block and digital module is connect with the output end of the hookup on bread board (15), the analog module, tune The output end of the input terminal of molding block and digital module is connect with computer.

2. a kind of computer control system experimental box according to claim 1, which is characterized in that the power module includes Power switch (2), power supply indicator (3), power interface (4) and power supply interface (5)；One end of the power switch (2) and electricity Source interface (4) connection, the other end of the power switch (2) are connect with one end of power supply indicator (3), the power supply indicator (3) the other end is connect with the input terminal of power supply interface (5).

3. a kind of computer control system experimental box according to claim 2, which is characterized in that the peripheral module includes VGA peripheral hardware microcomputer interface (1), AXIS Peripheral Interface (6), CHDO Peripheral Interface (7), ENCI Peripheral Interface (8), ETAIO peripheral hardware Interface (9) and PCSIO Peripheral Interface (10), the on-off connection control unit includes on-off indicator light (12), on-off switch (13) and make break contact (14), one end of the make break contact (14) are sequentially connected in series on-off switch (13) and on-off indicator light (12) It is formed into a loop with the other end of make break contact (14).

4. a kind of computer control system experimental box according to claim 3, which is characterized in that the analog module packet Analog input port (16) and analog output port (17) are included, the modulation module includes PWM modulation excitation (18), described Digital module includes digital voltage I/O interface (19).