CN203870426U - Single-port multipurpose circuit of single chip microcomputer on intelligent control board - Google Patents
Single-port multipurpose circuit of single chip microcomputer on intelligent control board Download PDFInfo
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- CN203870426U CN203870426U CN201420264577.9U CN201420264577U CN203870426U CN 203870426 U CN203870426 U CN 203870426U CN 201420264577 U CN201420264577 U CN 201420264577U CN 203870426 U CN203870426 U CN 203870426U
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- 238000005070 sampling Methods 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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Abstract
The utility model discloses a single-port multipurpose circuit of a single chip microcomputer on an intelligent control board, which comprises a single chip microcomputer. One port of the single chip microcomputer is parallelly connected with a buzzer BUZZER drive circuit and a sampling input circuit; the buzzer BUZZER drive circuit comprises a capacitor connected with the single chip microcomputer port; the other electrode of the capacitor is connected onto the positive electrode of a power supply sequentially via the buzzer BUZZER and a first resistor; the sampling input circuit comprises a second resistor and a third resistor serially connected between the single chip microcomputer port and the power positive electrode; the connection end of the second resistor and the third resistor is provided with a lead and is connected with the positive electrode of a sampling sensor; the negative electrode of the sampling sensor is grounded; and the resistance value of the second resistor is greater than that of the first resistor. One port of the single chip microcomputer is used to drive the buzzer BUZZER to work in the case of output and receive external signals acquired by the sampling sensor in the case of input, and two circuits are controlled by using one port.
Description
Technical field
The utility model relates to control circuit, especially relates to the multiplex circuit of single port of single-chip microcomputer on a kind of Intelligent control board.
Background technology
Control panel is one of core component of various household electrical appliance, most of specific formula function is all to lean on these parts to realize, in a sense, the quality of control panel, quality and the life-span of household electrical appliance have been determined, the gate of the quality monitoring of having controlled control panel, the survival and development of Shi Ge great control panel enterprise basic.Sometimes in an electrical equipment, need to arrange a lot of different circuit units, therefore this means the integrated level that will improve as much as possible circuit, yet for the pin on integrated circuit, due to the finiteness of silicon area and the limitation of manufacturing process, number of pins increase will far lag behind the raising of circuit level, so it is well-designed that each on-chip pin needs to carry out, how applying efficiently each pin is the problem that designer will face.
Summary of the invention
For overcoming existing shortcoming, the utility model object is to provide a kind of and designs its output and be input as the multiplex circuit without circuit unit at an one-chip machine port.
The utility model is realized by following technical measures, and on a kind of Intelligent control board, the multiplex circuit of the single port of single-chip microcomputer, comprises single-chip microcomputer, is parallel with a hummer BUZZER driving circuit and a circuit of sampling input on a port of described single-chip microcomputer; Described hummer BUZZER driving circuit comprises the electric capacity that connects one-chip machine port, and another utmost point of described electric capacity is connected to the positive pole of power supply successively by hummer BUZZER and the first resistance; Described circuit of sampling input comprises the second resistance and the 3rd resistance between the positive source that is connected on one-chip machine port, the link of described the second resistance and the 3rd resistance is provided with the positive pole that goes between and be connected sampling sensor, the minus earth of sampling sensor, the resistance value of described the second resistance is greater than the resistance value of the first resistance.
As a kind of optimal way, the resistance value of described the first resistance is 330 Europe, and the resistance value of described the second resistance is 1 kilo-ohm, and the resistance value of described the 3rd resistance is 10 kilo-ohms.
As a kind of optimal way, described sampling sensor is temperature sensor.
As a kind of optimal way, described hummer BUZZER is passive BUZZER.
The utility model is when the port of single-chip microcomputer is during as output control terminal mouth, and a square-wave signal of port output of single-chip microcomputer, drives through electric capacity, drives BUZZER to work on power, and BUZZER sounds; When the port of single-chip microcomputer MUC is during as input port, during outer signals that sampling sensor gathers, through the 3rd resistance, obtain a voltage division signal, then be input to PORT port through the second resistance, thereby the outer signals of sampling sensor collection is transferred to single-chip microcomputer.This circuit utilizes a port of single-chip microcomputer, drives hummer BUZZER work when output, receives the outer signals that sampling sensor gathers when input.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
On a kind of Intelligent control board, the multiplex circuit 100 of the single port of single-chip microcomputer, with reference to figure 1, comprises single-chip microcomputer MUC, on a port PORT of described single-chip microcomputer MUC, is parallel with a hummer BUZZER driving circuit and a circuit of sampling input; Described hummer BUZZER driving circuit comprises the capacitor C that connects one-chip machine port PORT, and another utmost point of described capacitor C is connected to the positive pole of power supply successively by hummer BUZZER and current-limiting resistance R1; Described circuit of sampling input comprises resistance R 2 and the resistance R 3 between the positive source that is connected on one-chip machine port PORT, the link of resistance R 2 and resistance R 3 is provided with the positive pole that goes between and be connected sampling sensor, the minus earth of sampling sensor, the resistance value of described resistance R 2 is greater than the resistance value of resistance R 1.
When the port of single-chip microcomputer MUC is during as output control terminal mouth, a square-wave signal of port output of single-chip microcomputer MUC, drives through capacitor C, drives BUZZER to work on power, and BUZZER sounds; When the port of single-chip microcomputer MUC is during as input port, during outer signals that sampling sensor gathers, through resistance R 3, obtain a voltage division signal, then be input to PORT port through resistance R 2, thereby the outer signals of sampling sensor collection is transferred to single-chip microcomputer.This circuit utilizes a port of single-chip microcomputer, drives hummer BUZZER work when output, receives the outer signals that sampling sensor gathers when input.
The multiplex circuit of the single port of single-chip microcomputer on the Intelligent control board of the present embodiment, please refer to Fig. 1, on the basis of previous technique scheme, can also be specifically, the resistance value of the first resistance be 330 Europe, the resistance value of described the second resistance is 1 kilo-ohm, and the resistance value of described the 3rd resistance is 10 kilo-ohms.
On the Intelligent control board of the present embodiment, the multiplex circuit of the single port of single-chip microcomputer, please refer to Fig. 1, on the basis of previous technique scheme, can also be specifically, and sampling sensor is temperature sensor NTC.
On the Intelligent control board of the present embodiment, the multiplex circuit of the single port of single-chip microcomputer, please refer to Fig. 1, on the basis of previous technique scheme, can also be specifically, and hummer BUZZER is passive BUZZER.
More than that the multiplex circuit of single port of single-chip microcomputer on the utility model Intelligent control board is set forth; be used for helping to understand the utility model; but embodiment of the present utility model is not restricted to the described embodiments; anyly do not deviate from the change done under the utility model principle, modification, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (4)
1. the multiplex circuit of the single port of single-chip microcomputer on Intelligent control board, is characterized in that: comprise single-chip microcomputer, be parallel with a hummer BUZZER driving circuit and a circuit of sampling input on a port of described single-chip microcomputer; Described hummer BUZZER driving circuit comprises the electric capacity that connects one-chip machine port, and another utmost point of described electric capacity is connected to the positive pole of power supply successively by hummer BUZZER and the first resistance; Described circuit of sampling input comprises the second resistance and the 3rd resistance between the positive source that is connected on one-chip machine port, the link of described the second resistance and the 3rd resistance is provided with the positive pole that goes between and be connected sampling sensor, the minus earth of sampling sensor, the resistance value of described the second resistance is greater than the resistance value of the first resistance.
2. the multiplex circuit of single port of single-chip microcomputer on Intelligent control board according to claim 1, is characterized in that: the resistance value of described the first resistance is 330 Europe, and the resistance value of described the second resistance is 1 kilo-ohm, and the resistance value of described the 3rd resistance is 10 kilo-ohms.
3. the multiplex circuit of single port of single-chip microcomputer on Intelligent control board according to claim 1, is characterized in that: described sampling sensor is temperature sensor.
4. the multiplex circuit of single port of single-chip microcomputer on Intelligent control board according to claim 1, is characterized in that: described hummer BUZZER is passive BUZZER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264577.9U CN203870426U (en) | 2014-05-22 | 2014-05-22 | Single-port multipurpose circuit of single chip microcomputer on intelligent control board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264577.9U CN203870426U (en) | 2014-05-22 | 2014-05-22 | Single-port multipurpose circuit of single chip microcomputer on intelligent control board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203870426U true CN203870426U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264577.9U Expired - Lifetime CN203870426U (en) | 2014-05-22 | 2014-05-22 | Single-port multipurpose circuit of single chip microcomputer on intelligent control board |
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| CN (1) | CN203870426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489221A (en) * | 2018-12-18 | 2019-03-19 | 奥克斯空调股份有限公司 | Anti-jamming circuit and transducer air conditioning |
-
2014
- 2014-05-22 CN CN201420264577.9U patent/CN203870426U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489221A (en) * | 2018-12-18 | 2019-03-19 | 奥克斯空调股份有限公司 | Anti-jamming circuit and transducer air conditioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518132 Guangdong province Shenzhen Guangming New District Gongming Street office Yu Tong Tian Liao community with the concept of road nineteen, road 10, Jiuzhou Industrial Park Building 1, floor 802 Patentee after: SHENZHEN F&R TECHNOLOGIES CO.,LTD. Address before: 518000 Guangdong city of Shenzhen province Baoan District Shiyan town Tangtou village Longma industrial city A1 Building 5 floor Patentee before: SHENZHEN F&R ELECTRONICS TECHNOLOGY Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20141008 |