CN104504977A - Electronic control technology experimental device - Google Patents
Electronic control technology experimental device Download PDFInfo
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- CN104504977A CN104504977A CN201510000920.8A CN201510000920A CN104504977A CN 104504977 A CN104504977 A CN 104504977A CN 201510000920 A CN201510000920 A CN 201510000920A CN 104504977 A CN104504977 A CN 104504977A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
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Abstract
The invention provides an electronic control technology experimental device and relates to the field of electrical equipment. The electronic control technology experimental device is free from restriction of place and power and can be independently designed. The electronic control technology experimental device is composed of an acrylic bottom plate, a master control panel, a battery, a breadboard and elements and comprises a power input automatically switching circuit, a stabilizing circuit, a voltage sampling circuit, a current sampling circuit, a microcontroller, an output state indicating circuit and an output interface circuit, wherein the power input automatically switching circuit is used for switching the power supply provided by the battery or a power adapter; the stabilizing circuit is used for powering the microcontroller and the output state indicating circuit, supplying 5-volt or 3-volt stabilized output and supplying power for a 5-volt level; the voltage sampling circuit is used for power overvoltage protection and undervoltage alarming; the current sampling circuit is used of overload protection; the output state indicating circuit is used for displaying output state; the output interface circuit is used for providing interfaces for voltage and level output.
Description
Technical field
The present invention relates to electrical equipment, refer to a kind of electron controls technology experimental facilities especially.
Background technology
At present, undergraduate course and universities and colleges adopt experimental box as the experiments supporting platform of " electron controls technology ", complete the experiment of textbook and movable handbook requirement, but this experimental box can only wiring, the restriction that there is restriction and the power supply being subject to place is comparatively large, and cannot carry out the defect of autonomous Design.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electron controls technology experimental facilities, and overcoming existing experimental box can only wiring, exist by the restriction in place and the restriction of power supply comparatively large, and the problem of autonomous Design cannot be carried out.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of electron controls technology experimental facilities, be made up of acrylic base plate, master control board, battery, bread board and element, this electron controls technology experimental facilities comprises: power supply input automatic switch-over circuit, mu balanced circuit, voltage sampling circuit, current sampling circuit, microcontroller, output state indicating circuit and output interface circuit, wherein
Described power supply input automatic switch-over circuit, for switching the power supply that battery or power supply adaptor provide;
Described mu balanced circuit connects described power supply input automatic switch-over circuit, for powering to microcontroller and output state indicating circuit, exports for 5V and 3V voltage stabilizing, and provides power supply for 5V level;
Described voltage sampling circuit inputs to microcontroller after dividing potential drop, calculates the magnitude of voltage of input power, and for power supply overvoltage protection, undervoltage warning;
Described current sampling circuit is connected with microcontroller, for overload protection;
Described output state indicating circuit is connected with microcontroller, for display translation state;
Described output interface circuit is connected with described current sampling circuit, for providing the interface of output voltage and level.
Further, described power supply input automatic switch-over circuit comprises: battery input interface and power supply adaptor input interface, when power supply adaptor does not insert power supply adaptor input interface, are now powered battery; When power supply adaptor being inserted power supply adaptor input interface, cut off powered battery, system is powered by power supply adaptor.
Further, described mu balanced circuit comprises: the first mu balanced circuit, the second mu balanced circuit and the 3rd mu balanced circuit, wherein, first mu balanced circuit is used for powering to microcontroller and input voltage display circuit, second mu balanced circuit is the low-dropout linear voltage-regulating circuit turned off by microprocessor controls, output voltage 5V, exports for 5V voltage stabilizing and three road 5V level provide power supply; Become 3V through the 3rd mu balanced circuit after the 5V output of the second mu balanced circuit, export for 3V voltage stabilizing.
Further, voltage sampling circuit is resistor voltage divider circuit, after dividing potential drop, inputs to the built-in ADC of microcontroller, and microcontroller calculates the magnitude of voltage of input power after ADC sampling, exports display display to.
Further, current sampling circuit is the low resistance sample resistance with being series at input and between output ground.
Further, this electron controls technology experimental facilities also comprises, be connected to the comparator circuit between current sampling circuit and microcontroller, if load current is greater than preset value, then by comparator circuit output low level, this signal inputs to microcontroller, and microcontroller turns off the output of the second mu balanced circuit, cuts off the 5V power supply of load end, 5V level signal and 3V voltage stabilizing and exports.
Further, this electron controls technology experimental facilities also comprises: input voltage display circuit, is connected with microcontroller, receives the digital signal that microcontroller exports, drives three pen section liquid crystal display.
Further, output interface circuit described in this electron controls technology experimental facilities is exported by six double female seats of 2.54*2, identical with the plate hole of bread board, by bread board industrial siding joint face wrapper sheet.
The beneficial effect of technique scheme of the present invention is as follows:
In such scheme, this electron controls technology experimental facilities, can carry out autonomous Design, when this experimental facilities is tested, not by the restriction in place, also not by the restriction of power supply, just can well complete in general classroom, all components and parts are directly received on the bread board on equipment, this experimental facilities has 3V and 5V through voltage stabilizing, also have overload, overvoltage protection, do not burn power supply, do not burn components and parts, security is high; Further, this experimental facilities is furnished with special subassembly wrapper, the required components and parts used is arranged clearly, is put, easily identifies, take easily, conventional efficient is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of electron controls technology experimental facilities in the embodiment of the present invention;
Fig. 2 is the theory structure schematic diagram of electron controls technology experimental facilities in the embodiment of the present invention;
Fig. 3 is power supply input automatic switch-over circuit schematic diagram in the embodiment of the present invention;
Fig. 4 is mu balanced circuit schematic diagram in the embodiment of the present invention;
Fig. 5 is voltage sample and current sampling circuit schematic diagram in the embodiment of the present invention;
Fig. 6 is microcontroller circuit schematic diagram in the embodiment of the present invention;
Fig. 7 is input voltage display circuit schematic diagram in the embodiment of the present invention;
Fig. 8 is output state indicating circuit schematic diagram in the embodiment of the present invention;
Fig. 9 is output interface circuit schematic diagram in the embodiment of the present invention.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention is directed to existing experimental box can only wiring, exist by the restriction in place and the restriction of power supply comparatively large, and the problem of autonomous Design cannot be carried out, a kind of electron controls technology experimental facilities is provided.
As depicted in figs. 1 and 2, the electron controls technology experimental facilities of the embodiment of the present invention, be made up of acrylic base plate, master control board, battery, bread board and element, this electron controls technology experimental facilities comprises: power supply input automatic switch-over circuit, mu balanced circuit, voltage sampling circuit, current sampling circuit, microcontroller, output state indicating circuit and output interface circuit, wherein
Described power supply input automatic switch-over circuit, for switching the power supply that battery or power supply adaptor provide;
Described mu balanced circuit connects described power supply input automatic switch-over circuit, for powering to microcontroller and output state indicating circuit, exports for 5V and 3V voltage stabilizing, and provides power supply for 5V level; Described voltage sampling circuit inputs to microcontroller after dividing potential drop, calculates the magnitude of voltage of input power, and for power supply overvoltage protection, undervoltage warning;
Described current sampling circuit is connected with microcontroller by comparator circuit, for overload protection;
Described output state indicating circuit is connected with microcontroller, for display translation state;
Described output interface circuit is connected with described current sampling circuit, for providing the interface of output voltage and level.
Further, described power supply input automatic switch-over circuit comprises: battery input interface and power supply adaptor input interface, when power supply adaptor does not insert power supply adaptor input interface, are now powered battery; When power supply adaptor being inserted power supply adaptor input interface, cut off powered battery, system is powered by power supply adaptor.
Further, described mu balanced circuit comprises: the first mu balanced circuit, the second mu balanced circuit and the 3rd mu balanced circuit, wherein, first mu balanced circuit is used for microcontroller and monitor power supply, second mu balanced circuit is the low-dropout linear voltage-regulating circuit turned off by microprocessor controls, output voltage 5V, exports for 5V voltage stabilizing and three road 5V level provide power supply; Become 3V through the 3rd mu balanced circuit after the 5V output of the second mu balanced circuit, export for 3V voltage stabilizing.
Further, voltage sampling circuit is resistor voltage divider circuit, after dividing potential drop, inputs to the built-in ADC of microcontroller, and microcontroller calculates the magnitude of voltage of input power after ADC sampling, exports display display to.
Further, current sampling circuit is the low resistance sample resistance with being series at input and between output ground.
Further, this electron controls technology experimental facilities also comprises, be connected to the comparator circuit between current sampling circuit and microcontroller, if load current is greater than preset value, then by comparator circuit output low level, this signal inputs to microcontroller, and microcontroller turns off the output of the second mu balanced circuit, cuts off the 5V power supply of load end, 5V level signal and 3V voltage stabilizing and exports.
Further, this electron controls technology experimental facilities also comprises: input voltage display circuit, is connected with microcontroller, receives the digital signal that microcontroller exports, drives three pen section liquid crystal display.
Further, output interface circuit described in this electron controls technology experimental facilities is exported by six double female seats of 2.54*2, identical with the plate hole of bread board, by bread board industrial siding joint face wrapper sheet.
With concrete example, technical scheme of the present invention is described below, as shown in Figure 3, for the power supply input automatic switch-over circuit schematic diagram of the embodiment of the present invention, wherein, J1 is battery input interface, J2 is power supply adaptor input interface, and power supply adaptor is power supply conversion equipment, can power by external power supply.When power supply adaptor does not insert power supply adaptor input interface, the 2-3 pin of J2 power supply adaptor input interface is connected, battery cathode with systematically connect, be now powered battery; When the plug of power supply adaptor is inserted J2 power supply adaptor input interface, the 2-3 pin of J2 power supply adaptor input interface disconnects, and cut off powered battery, system is powered by power supply adaptor.
As shown in Figure 4, for the mu balanced circuit schematic diagram of the embodiment of the present invention, after the power supply input of power supply input automatic switch-over circuit, be divided into three road mu balanced circuits, comprise: the first mu balanced circuit (U3), second mu balanced circuit (U1) and the 3rd mu balanced circuit (U2), wherein, first mu balanced circuit (U3) is powered for giving microcontroller and input voltage display circuit, input voltage display circuit is connected with microcontroller, receive the digital signal that microcontroller exports, drive three pen section liquid crystal display, second mu balanced circuit (U1) is the low-dropout linear voltage-regulating circuit turned off by microprocessor controls, output voltage 5V, 5V voltage stabilizing for the second mu balanced circuit exports and three road 5V level provide power supply, 5V becomes 3V through the 3rd mu balanced circuit (U2) after exporting, and exports for 3V voltage stabilizing.
As shown in Figure 5, for voltage sample and the current sampling circuit schematic diagram of the embodiment of the present invention, wherein, voltage sampling circuit is resistor voltage divider circuit, after dividing potential drop, input to the built-in ADC of microcontroller, microcontroller calculates the magnitude of voltage of input power after ADC sampling, exports the display display of input voltage display circuit to; Voltage sampling circuit is simultaneously also for power supply overvoltage protection, undervoltage warning.By comparing with the overvoltage protection value (7V) and undervoltage warning value (5.2V) of programming: if input voltage is greater than 7V, microcontroller turns off the output terminal of the second mu balanced circuit, overvoltage/undervoltage indication warning simultaneously; If input voltage is less than 5.2V, overvoltage/undervoltage indication warning.
Current sampling circuit is the low resistance sample resistance (R7) with being series at input and between output ground; if load current is greater than 550mA; the comparer output low level be then made up of U4; this signal inputs to microcontroller; microcontroller turns off the output of the second mu balanced circuit; the now 5V power supply of load end, 5V level signal and 3V voltage stabilizing exports all to be cut off, thus protection load and power supply, overload protection pilot lamp flicker is simultaneously reported to the police.
As shown in Figure 6; for the microcontroller circuit schematic diagram of the embodiment of the present invention, in the present embodiment, microcontroller is the core of this device; adopt STM8S105 chip; the built-in ADC of this microprocessor, the analog quantity voltage come from supply voltage sample circuit of sampling, calculates input voltage; and show at display; control output and the shutoff of the second mu balanced circuit, receive the signal that overload short circuit protection circuit exports, drive three LED light.
As shown in Figure 7, be the input voltage display circuit schematic diagram of the embodiment of the present invention, U6 is tip of the brushstyle of a writing or painting liquid crystal driving integrated package, receives the digital signal that microcontroller exports, drives three pen section liquid crystal display.
As shown in Figure 8, be the output state indicating circuit schematic diagram of the embodiment of the present invention, output state indicating circuit is made up of three light emitting diodes.When input voltage is between 5.2V to 7V, when output current is less than 550mA, green light (LED1) is bright, and all the other lamps go out; When input voltage is lower than 5.2V, amber light (LED2) glimmers, and represent under-voltage, prompting need change battery; When output current is more than 550mA, overload protecting circuit output digit signals is to microcontroller, and now microcontroller turns off the second mu balanced circuit, and output is turned off, and red light (LED3) flicker simultaneously, represents overload or short circuit; If when power supply adaptor input voltage is greater than 7V, microcontroller turns off the second mu balanced circuit, and output is turned off, and three pilot lamp glimmer simultaneously simultaneously, represents overvoltage.
As shown in Figure 9, be the output interface circuit schematic diagram of the embodiment of the present invention, output interface circuit is exported by six double female seats of 2.54*2, identical with the plate hole of bread board, by bread board industrial siding joint face wrapper sheet.J5 to J7 is+5V ,+3V, GND output port, and J8 to J10 is three road 5V level signal output ports, and S2 to S4 is 5V level control switch.Each output terminal is all connected to LED light, and high level is bright.
It should be noted that, bread board is that the welding experimental design aiming at electronic circuit manufactures.Because various electronic devices and components can arbitrarily insert as required or extract, eliminate welding, save the built-up time of circuit, and element can be reused, so the assembling of very applicable electronic circuit, debugging and training.
The electron controls technology experimental facilities that the embodiment of the present invention provides, autonomous Design can be carried out, when this experimental facilities is tested, not by the restriction in place, also not by the restriction of power supply, just can well complete in general classroom, all components and parts are directly received on the bread board on equipment, and this experimental facilities has 3V and 5V through voltage stabilizing, also have overload, overvoltage protection, do not burn power supply, do not burn components and parts, security is high; Further, this experimental facilities is furnished with special subassembly wrapper, the required components and parts used is arranged clearly, is put, easily identifies, take easily, conventional efficient is high.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. an electron controls technology experimental facilities, be made up of acrylic base plate, master control board, battery, bread board and element, it is characterized in that, comprise: power supply input automatic switch-over circuit, mu balanced circuit, voltage sampling circuit, current sampling circuit, microcontroller, output state indicating circuit and output interface circuit, wherein
Described power supply input automatic switch-over circuit, for switching the power supply that battery or power supply adaptor provide;
Described mu balanced circuit connects described power supply input automatic switch-over circuit, for powering to microcontroller and output state indicating circuit, exports for 5V and 3V voltage stabilizing, and provides power supply for 5V level;
Described voltage sampling circuit inputs to microcontroller after dividing potential drop, calculates the magnitude of voltage of input power, and for power supply overvoltage protection, undervoltage warning;
Described current sampling circuit is connected with microcontroller, for overload protection;
Described output state indicating circuit is connected with microcontroller, for display translation state;
Described output interface circuit is connected with described current sampling circuit, for providing the interface of output voltage and level.
2. electron controls technology experimental facilities according to claim 1, it is characterized in that, described power supply input automatic switch-over circuit comprises: battery input interface and power supply adaptor input interface, when power supply adaptor does not insert power supply adaptor input interface, are now powered battery; When power supply adaptor being inserted power supply adaptor input interface, cut off powered battery, system is powered by power supply adaptor.
3. electron controls technology experimental facilities according to claim 1 and 2, it is characterized in that, described mu balanced circuit comprises: the first mu balanced circuit, the second mu balanced circuit and the 3rd mu balanced circuit, wherein, first mu balanced circuit is used for powering to microcontroller and input voltage display circuit, second mu balanced circuit is the low-dropout linear voltage-regulating circuit turned off by microprocessor controls, output voltage 5V, for 5V voltage stabilizing output and three road 5V level provide power supply; Become 3V through the 3rd mu balanced circuit after the 5V output of the second mu balanced circuit, export for 3V voltage stabilizing.
4. electron controls technology experimental facilities according to claim 3, is characterized in that, voltage sampling circuit is resistor voltage divider circuit, after dividing potential drop, input to the built-in ADC of microcontroller, microcontroller calculates the magnitude of voltage of input power after ADC sampling, exports display display to.
5. electron controls technology experimental facilities according to claim 4, is characterized in that, current sampling circuit is the low resistance sample resistance with being series at input and between output ground.
6. electron controls technology experimental facilities according to claim 5, it is characterized in that, also comprise, be connected to the comparator circuit between current sampling circuit and microcontroller, if load current is greater than preset value, then by comparator circuit output low level, this signal inputs to microcontroller, microcontroller turns off the output of the second mu balanced circuit, cuts off the 5V power supply of load end, 5V level signal and 3V voltage stabilizing and exports.
7. electron controls technology experimental facilities according to claim 6, is characterized in that, also comprise: input voltage display circuit, is connected with microcontroller, receives the digital signal that microcontroller exports, drives three pen section liquid crystal display.
8. electron controls technology experimental facilities according to claim 7, is characterized in that, described output interface circuit is exported by six double female seats of 2.54*2, identical with the plate hole of bread board, by bread board industrial siding joint face wrapper sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000920.8A CN104504977A (en) | 2015-01-05 | 2015-01-05 | Electronic control technology experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000920.8A CN104504977A (en) | 2015-01-05 | 2015-01-05 | Electronic control technology experimental device |
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| Publication Number | Publication Date |
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| CN104504977A true CN104504977A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510000920.8A Pending CN104504977A (en) | 2015-01-05 | 2015-01-05 | Electronic control technology experimental device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449878A (en) * | 2018-10-24 | 2019-03-08 | 湖南大学 | Low-voltage direct intelligent switch control system |
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2015
- 2015-01-05 CN CN201510000920.8A patent/CN104504977A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 樊彦强等: "基于ATmega16L的便携设备电源系统设计", 《电子设计工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449878A (en) * | 2018-10-24 | 2019-03-08 | 湖南大学 | Low-voltage direct intelligent switch control system |
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Application publication date: 20150408 |