CN202523287U - Teaching experiment and demonstration device for single chip microcomputer - Google Patents
Teaching experiment and demonstration device for single chip microcomputer Download PDFInfo
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- CN202523287U CN202523287U CN 201220148714 CN201220148714U CN202523287U CN 202523287 U CN202523287 U CN 202523287U CN 201220148714 CN201220148714 CN 201220148714 CN 201220148714 U CN201220148714 U CN 201220148714U CN 202523287 U CN202523287 U CN 202523287U
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Abstract
The utility model relates to a teaching experiment and demonstration device for a single chip microcomputer. The teaching experiment and demonstration device comprises a single chip microcomputer system, a receiving circuit, a serial communication circuit, an execution circuit and a display circuit, wherein the single chip microcomputer system is used for controlling a complete machine; the output end of the receiving circuit is connected with the single chip microcomputer system; the serial communication circuit is connected with the single chip microcomputer system; the input end of the execution circuit is connected with the single chip microcomputer system; the input end of the display circuit is connected with the single chip microcomputer system; temperature signals or pressure signals or gravity signals or displacement signals or acceleration signals received by the receiving circuit are converted into electrical signals and are output to the single chip microcomputer; and the single chip microcomputer operates according to the preset procedures and outputs control singles and calculation results. The teaching experiment and demonstration device has the advantages of reasonable design, simple structure, intuitive demonstration, good experiment effect, precise control and the like, and can be used as teaching demonstration and experiment instruments for professional single chip microcomputers of electricity, electronics, automatic control and the like in colleges and universities.
Description
Technical field
The utility model belongs to teaching demonstration and experimental apparatus technical field, is specifically related to single chip computer teaching lecture experiment instrument.
Background technology
SCM system has programming calculation function and control function; In the automatic control of industry, used widely; Adopt the aperture of SCM system control electromagnetic valve door to confirm proportion of raw materials in the oil refining process like refinery; On spreader with the control of SCM system control pitch nozzle switch, pitch sprinkling amount, with the size that is switched on or switched off, adjusts electric current of SCM system control circuit and commutate.SCM system is as electric, the electrical type of universities, the compulsory course of specialty experiment teaching such as control automatically.But mostly present most one-chip computer developing system is application but not hardware bottom layer, will be unfavorable for the personnel training that this is professional.Have at present and encircle preparation teaching and lecture experiment instrument many Lantern Festival.In electric, the electrical type of universities, professional teaching technical field such as control automatically, the urgent technical matters that solves of current need provides a kind ofly can demonstrate the demonstration that single-chip microcomputer controls automatically or the equipment or the device of experiment.
Summary of the invention
The utility model technical matters to be solved is to overcome the shortcoming of above-mentioned SCM system experimental apparatus, and a kind of reasonable in design, simple in structure, demonstrating visual, good, the accurate single chip computer teaching experimental demonstration device of control of experiment effect are provided.
Solving the problems of the technologies described above the technical scheme that is adopted is that it comprises: the SCM system that complete machine is controlled; Receiving circuit, the output terminal of this circuit connects SCM system; Serial communication circuit, this circuit links to each other with SCM system; Executive circuit, the input end of this circuit connects SCM system; Also comprise display circuit, the input end of this circuit connects SCM system.
The display circuit of the utility model is: 7 pin of integrated circuit U4～14 pin connect 1 pin～8 pin of integrated circuit U1,37 pin that 6 pin meet integrated circuit U1 respectively and connect that 5V positive source, 4 pin connect 39 pin of integrated circuit U1 and connect through resistance R 21 that an end and adjustable end, 2 pin that 5V positive source, 3 pin meet potentiometer R13 connect the 5V positive source, 15 pin connect 5V positive source, 1 pin and 16 pin ground connection, the other end ground connection of potentiometer R13 through resistance R 14 through resistance R 12; Integrated circuit U1 is that the single-chip microcomputer model is 89551, and the model of integrated circuit U4 is LCD1602.
It is the LCD of LCD1602 that the utility model adopts model, realizes treating temperature or the pressure or the demonstration in real time such as displacement or acceleration of side.Advantage such as the utlity model has reasonable in design, simple in structure, demonstrating visual, experiment effect is good, control is accurate can be made electric, the electrical type of universities, the teaching demonstration and the experimental apparatus of professional single-chip microcomputer such as control automatically.
Description of drawings
Fig. 1 is the electrical principle block scheme of the utility model.
Fig. 2 is the electronic circuit schematic diagram of the utility model.
Embodiment
To the utility model further explain, but the utility model is not limited to these embodiment below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the electrical principle block scheme of the utility model, referring to Fig. 1.In Fig. 1, the utility model is to be connected and composed by receiving circuit, SCM system, serial communication circuit, executive circuit, display circuit.The output terminal power connecting sheet machine system of receiving circuit, SCM system links to each other with serial communication circuit, the output termination executive circuit and the display circuit of SCM system.
In Fig. 2, the receiving circuit of present embodiment is connected and composed by integrated circuit U2, resistance R 10, capacitor C 2, and integrated circuit U2 is that the temperature sensor model is DS18B20.The end of the 3 pin connecting resistance R10 of integrated circuit U2 and an end of capacitor C 2 also connect 5V positive source, 1 pin ground connection, the other end ground connection of capacitor C 2, and 2 pin of integrated circuit U2 and the other end of resistance R 10 connect SCM system.Temperature sensor converts received temperature signal electric signal to and converts digital signal to and outputs to SCM system.The temperature sensor of present embodiment is replaced to pressure transducer or gravity sensor or displacement transducer or acceleration transducer, and the utility model can be used for detected pressures or gravity or displacement or acceleration.
The SCM system of present embodiment is connected and composed by integrated circuit U1, resistance R 9, capacitor C 1, capacitor C 7, capacitor C 8, crystal oscillator Y1, button S1, and integrated circuit U1 is that the single-chip microcomputer model is 89551.The other end of the 12 pin connecting resistance R10 of integrated circuit U1, the end of 9 pin connecting resistance R9 and an end of capacitor C 1 and the end of button S; Another termination 5V positive source of the other end of capacitor C 1 and button S; The other end ground connection of resistance R 9, resistance R 9 connects and composes reset circuit with capacitor C 1 and button S; 18 pin of integrated circuit U1 and 19 pin connect the oscillatory circuit, 31 pin and 40 pin that are connected into by capacitor C 7 and capacitor C 8 and crystal oscillator Y1 and connect 5V positive source, 20 pin ground connection, 10 pin and 11 pin and connect that serial communication circuit, 21～28 pin connect executive circuit, 1 pin～8 pin connect display circuit, 37 pin and 39 pin and connect～display circuit.
The serial communication circuit of present embodiment is connected and composed by integrated circuit U3, capacitor C 3～capacitor C 7, socket J1, and the model of integrated circuit U3 is MAX232.11 pin of integrated circuit U3 connect two ends that two ends, 4 pin and 5 pin that 11 pin of integrated circuit U1,10 pin, 1 pin and 3 pin that 12 pin meet integrated circuit U1 connect capacitor C 3 respectively connect capacitor C 4 respectively, a end that 2 pin connect capacitor C 5, the other end that 16 pin connect 5V positive source and capacitor C 5, a end that 6 pin connect capacitor C 6, the other end that 15 pin connect capacitor C 6 and ground, 3 pin of 14 pin combination hub J1,2 pin of 13 pin combination hub J1, and socket J1 is used for linking to each other with external computing machine.Resistance R S232 interface both can download to single-chip microcomputer, also can realize the serial communication of single-chip microcomputer and PC.
The executive circuit of present embodiment is connected and composed by light emitting diode D1～light emitting diode D8, resistance R 1～resistance R 8.21 pin, positive pole that the negative pole of light emitting diode D1 meets integrated circuit U1 connect the 5V positive source through resistance R 1; 22 pin, positive pole that the negative pole of light emitting diode D2 meets integrated circuit U1 connect the 5V positive source through resistance R 2; 23 pin, positive pole that the negative pole of light emitting diode D3 meets integrated circuit U1 connect the 5V positive source through resistance R 3; 24 pin, positive pole that the negative pole of light emitting diode D4 meets integrated circuit U1 connect the 5V positive source through resistance R 4; 25 pin, positive pole that the negative pole of light emitting diode D5 meets integrated circuit U1 connect the 5V positive source through resistance R 5; 26 pin, positive pole that the negative pole of light emitting diode D6 meets integrated circuit U1 connect the 5V positive source through resistance R 6; 27 pin, positive pole that the negative pole of light emitting diode D7 meets integrated circuit U1 connect the 5V positive source through resistance R 7, and 28 pin, positive pole that the negative pole of light emitting diode D8 meets integrated circuit U1 connect the 5V positive source through resistance R 8.
The display circuit of present embodiment is connected and composed by integrated circuit U4, resistance R 11, resistance R 12, potentiometer R13, resistance R 14, and integrated circuit U4 is that LCD types is LCD1602.7 pin of integrated circuit U4～14 pin connect 1 pin～8 pin of integrated circuit U1,37 pin that 6 pin meet integrated circuit U1 respectively and connect that 5V positive source, 4 pin connect 39 pin of integrated circuit U1 and connect through resistance R 21 that an end and adjustable end, 2 pin that 5V positive source, 3 pin meet potentiometer R13 connect the 5V positive source, 15 pin connect 5V positive source, 1 pin and 16 pin ground connection through resistance R 14 through resistance R 12; The other end ground connection of potentiometer R13, potentiometer R13 is used for the contrast adjustment to LCD.Display circuit can demonstrate the temperature of object under test.Temperature sensor in the receiving circuit is replaced to pressure transducer or gravity sensor or displacement transducer or acceleration transducer, and the utility model can be used for detected pressures or gravity or displacement or acceleration.
Claims (2)
1. single chip computer teaching experimental demonstration device is characterized in that it comprises:
The SCM system that complete machine is controlled;
Receiving circuit, the output terminal of this circuit connects SCM system;
Serial communication circuit, this circuit links to each other with SCM system;
Executive circuit, the input end of this circuit connects SCM system;
Also comprise display circuit, the input end of this circuit connects SCM system.
2. according to the described single chip computer teaching experimental demonstration device of claim 1, it is characterized in that described display circuit is: 7 pin of integrated circuit U4～14 pin connect 1 pin～8 pin of integrated circuit U1,37 pin that 6 pin meet integrated circuit U1 respectively and connect that 5V positive source, 4 pin connect 39 pin of integrated circuit U1 and connect through resistance R 21 that an end and adjustable end, 2 pin that 5V positive source, 3 pin meet potentiometer R13 connect the 5V positive source, 15 pin connect 5V positive source, 1 pin and 16 pin ground connection through resistance R 14 through resistance R 12; Integrated circuit U1 is that the single-chip microcomputer model is 89551, and the model of integrated circuit U4 is LCD1602.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220148714 CN202523287U (en) | 2012-04-10 | 2012-04-10 | Teaching experiment and demonstration device for single chip microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220148714 CN202523287U (en) | 2012-04-10 | 2012-04-10 | Teaching experiment and demonstration device for single chip microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202523287U true CN202523287U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220148714 Expired - Fee Related CN202523287U (en) | 2012-04-10 | 2012-04-10 | Teaching experiment and demonstration device for single chip microcomputer |
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| Country | Link |
|---|---|
| CN (1) | CN202523287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680901A (en) * | 2014-12-01 | 2015-06-03 | 湖北大学 | System and method for performing visualization demonstration on 8051 singlechip principle |
-
2012
- 2012-04-10 CN CN 201220148714 patent/CN202523287U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680901A (en) * | 2014-12-01 | 2015-06-03 | 湖北大学 | System and method for performing visualization demonstration on 8051 singlechip principle |
| CN104680901B (en) * | 2014-12-01 | 2017-05-17 | 湖北大学 | System and method for performing visualization demonstration on 8051 singlechip principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130410 |