CN202562876U - Real-time display type alcohol detector - Google Patents
Real-time display type alcohol detector Download PDFInfo
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- CN202562876U CN202562876U CN2012202517146U CN201220251714U CN202562876U CN 202562876 U CN202562876 U CN 202562876U CN 2012202517146 U CN2012202517146 U CN 2012202517146U CN 201220251714 U CN201220251714 U CN 201220251714U CN 202562876 U CN202562876 U CN 202562876U
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Abstract
The utility model discloses a real-time display type alcohol detector. A traditional alcohol detector can only display a final measured numerical value and is poor in accuracy. A crystal oscillator Y1, a first capacitor C1 and a second capacitor C2 form an oscillator, so that a chip U1 is enabled to start work. A switch S1 enables the chip U1 to reset. A voltage drain drain (VDD) is a power supply with the voltage of 5 volts, and provides the direct-current power supply for the chip U1. The resistance value of an MQ-3 alcohol detector Q1 varies with the outside alcohol concentration in a linear mode, the MQ-3 alcohol detector Q1 transfers voltage of two ends of a sensor to a pin 8 of the chip U1, and analog quantity is converted into digital quantity through an alternated current / direct current (A / D) conversion module. A corresponding concentration value is obtained through a curve of voltage-concentration, and then is sent for display by a nixie tube. The real-time display type alcohol detector can not only display a varied numerical value in measurement in real time, is high in accuracy, but also has the function of alarm when a set threshold value is exceeded. Besides, the circuit is simple, and the cost is low.
Description
Technical field
The utility model belongs to the test and measuring technical field, especially a kind of real-time display type alcohol detector.
Background technology
Single-chip microcomputer with its high ratio of performance to price, has received people's attention and concern since coming out the seventies in 20th century, use very extensively, develop very fast.The single-chip microcomputer volume is little, in light weight, antijamming capability strong, environmental requirement is not high, cheap, reliability is high, dirigibility is good, exploitation is more or less freely.Through singlechip technology being applied in the instrument and equipment some functions that need in the time of can realizing measuring at an easy rate.Traditional alcohol detector can only show a final mensuration numerical value, and precision is not high.
Summary of the invention
The utility model provides a kind of real-time display type alcohol detector to the deficiency of prior art.
The utility model comprises chip U1, charactron M1, MQ-3 alcohol sensor Q1, hummer L1, first capacitor C 1, second capacitor C 2, first resistance R 1, second resistance R 2, the 3rd resistance R 3, crystal oscillator Y1, switch S 1.
1 pin of charactron M1 is connected with 27 pin of chip U1, and 2 pin of charactron M1 are connected with 28 pin of chip U1, and 3 pin of charactron M1 are connected with 29 pin of chip U1; 4 pin of charactron M1 are connected with 30 pin of chip U1, and a pin of charactron M1 is connected with 33 pin of chip U1, and the b pin of charactron M1 is connected with 34 pin of chip U1; The c pin of charactron M1 is connected with 35 pin of chip U1; The d pin of charactron M1 is connected with 36 pin of chip U1, and the e pin of charactron M1 is connected with 37 pin of chip U1, and the f pin of charactron M1 is connected with 38 pin of chip U1; The g pin of charactron M1 is connected with 39 pin of chip U1, and the dp pin of charactron M1 is connected with 40 pin of chip U1.
1,2,3 pin of MQ-3 alcohol sensor Q1 meet power supply VCC; 4,6 pin of MQ-3 alcohol sensor Q1 are connected with an end of 8 pin of chip U1 and second resistance R 2; 5 pin of MQ-3 alcohol sensor Q1 are connected with an end of first resistance R 1; 1 pin of hummer L1 is connected with 15 pin of chip U1; The end of crystal oscillator Y1 is connected with an end of first capacitor C 1 and 13 pin of chip U1 respectively, and the other end of crystal oscillator Y1 is connected with an end of second capacitor C 2 and 14 pin of chip U1 respectively, the other end of the other end of the other end of first resistance R 1, second resistance R 2, the other end of first capacitor C 1, second capacitor C 2 and the 2 pin ground connection of hummer L1; 1 pin of one chip termination U1 of the 3rd resistance R 3, an end of another termination switch S 1.11 pin of the other end of switch S 1, chip U1 meet power vd D after connecting, the 12 pin ground connection of chip U1, and other pin of chip U1 are unsettled.
The model of described chip U1 is PIC16F877A; The model of charactron M1 is SM410561K.
The beneficial effect of the utility model: this alcohol detector can not only show the variation numerical value when measuring in real time, and precision is higher, and the function of reporting to the police above setting threshold is arranged, and circuit is simple, and is with low cost.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model;
Fig. 2 is the utility model workflow diagram.
Embodiment
As shown in Figure 1, the utility model comprises chip U1, charactron M1, MQ-3 alcohol sensor Q1, hummer L1, first capacitor C 1, second capacitor C 2, first resistance R 1, second resistance R 2, the 3rd resistance R 3, crystal oscillator Y1, switch S 1.
1 pin of charactron M1 is connected with 27 pin of chip U1, and 2 pin of charactron M1 are connected with 28 pin of chip U1, and 3 pin of charactron M1 are connected with 29 pin of chip U1; 4 pin of charactron M1 are connected with 30 pin of chip U1, and a pin of charactron M1 is connected with 33 pin of chip U1, and the b pin of charactron M1 is connected with 34 pin of chip U1; The c pin of charactron M1 is connected with 35 pin of chip U1; The d pin of charactron M1 is connected with 36 pin of chip U1, and the e pin of charactron M1 is connected with 37 pin of chip U1, and the f pin of charactron M1 is connected with 38 pin of chip U1; The g pin of charactron M1 is connected with 39 pin of chip U1, and the dp pin of charactron M1 is connected with 40 pin of chip U1.
1,2,3 pin of MQ-3 alcohol sensor Q1 meet power supply VCC; 4,6 pin of MQ-3 alcohol sensor Q1 are connected with an end of 8 pin of chip U1 and second resistance R 2; 5 pin of MQ-3 alcohol sensor Q1 are connected with an end of first resistance R 1; 1 pin of hummer L1 is connected with 15 pin of chip U1; The end of crystal oscillator Y1 is connected with an end of first capacitor C 1 and 13 pin of chip U1 respectively, and the other end of crystal oscillator Y1 is connected with an end of second capacitor C 2 and 14 pin of chip U1 respectively, the other end of the other end of the other end of first resistance R 1, second resistance R 2, the other end of first capacitor C 1, second capacitor C 2 and the 2 pin ground connection of hummer L1; 1 pin of one chip termination U1 of the 3rd resistance R 3, an end of another termination switch S 1.The other end of switch S 1 is connected with power vd D with 11 pin of chip U1, the 12 pin ground connection of chip U1, and other pin of chip U1 are unsettled.
The model of described chip U1 is PIC16F877A; The model of charactron M1 is SM410561K.
As shown in Figure 2, the course of work of the utility model:
At the beginning of program brought into operation, alcohol-detection concentration had unsettled situation and occurs, and therefore first preheating is 20 seconds, and shows zero count by charactron.Reciprocal to zero, the hummer of ringing, the prompting alcohol-detection begins.Charactron shows the concentration of alcohol gas in real time during detection, detects that registration just no longer changes behind the Cmax.If just sending, the alarm threshold value that registration is set greater than the user, hummer ring continuously to report to the police.After one group of test result obtained, charactron showed whether " OFF " prompting continues to measure, if the user wants to continue to measure, can remeasure by reset key, otherwise powered-down finishes to measure.Crystal oscillator Y1, first capacitor C 1, second capacitor C 2 constitute oscillators, and chip U1 is started working.Switch S 1 can make chip U1 reset.VDD is the 5V power supply, and U1 provides direct supply for chip.MQ-3 alcohol sensor Q1 resistance value changes and linear the change with extraneous alcohol concentration, and the voltage at sensor two ends is sent into 8 pin of chip U1, changes analog quantity into digital quantity through the A/D modular converter in the single-chip microcomputer.Draw the respective concentration value through voltage-concentration curve again, send apparent by charactron.
Claims (1)
1. real-time display type alcohol detector is characterized in that: comprise chip U1, charactron M1, MQ-3 alcohol sensor Q1, hummer L1, first capacitor C 1, second capacitor C 2, first resistance R 1, second resistance R 2, the 3rd resistance R 3, crystal oscillator Y1, switch S 1;
1 pin of charactron M1 is connected with 27 pin of chip U1, and 2 pin of charactron M1 are connected with 28 pin of chip U1, and 3 pin of charactron M1 are connected with 29 pin of chip U1; 4 pin of charactron M1 are connected with 30 pin of chip U1, and a pin of charactron M1 is connected with 33 pin of chip U1, and the b pin of charactron M1 is connected with 34 pin of chip U1; The c pin of charactron M1 is connected with 35 pin of chip U1; The d pin of charactron M1 is connected with 36 pin of chip U1, and the e pin of charactron M1 is connected with 37 pin of chip U1, and the f pin of charactron M1 is connected with 38 pin of chip U1; The g pin of charactron M1 is connected with 39 pin of chip U1, and the dp pin of charactron M1 is connected with 40 pin of chip U1;
1,2,3 pin of MQ-3 alcohol sensor Q1 meet power supply VCC; 4,6 pin of MQ-3 alcohol sensor Q1 are connected with an end of 8 pin of chip U1 and second resistance R 2; 5 pin of MQ-3 alcohol sensor Q1 are connected with an end of first resistance R 1; 1 pin of hummer L1 is connected with 15 pin of chip U1, and the end of crystal oscillator Y1 is connected with an end of first capacitor C 1 and 13 pin of chip U1 respectively, and the other end of crystal oscillator Y1 is connected with an end of second capacitor C 2 and 14 pin of chip U1 respectively; The 2 pin ground connection of the other end of the other end of the other end of the other end of first resistance R 1, second resistance R 2, first capacitor C 1, second capacitor C 2 and hummer L1; 1 pin of one chip termination U1 of the 3rd resistance R 3, an end of another termination switch S 1, the other end of switch S 1 with meet power vd D after 11 pin of chip U1 are connected; The 12 pin ground connection of chip U1, other pin of chip U1 are unsettled;
The model of described chip U1 is PIC16F877A; The model of charactron M1 is SM410561K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202517146U CN202562876U (en) | 2012-05-28 | 2012-05-28 | Real-time display type alcohol detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202517146U CN202562876U (en) | 2012-05-28 | 2012-05-28 | Real-time display type alcohol detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202562876U true CN202562876U (en) | 2012-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202517146U Expired - Fee Related CN202562876U (en) | 2012-05-28 | 2012-05-28 | Real-time display type alcohol detector |
Country Status (1)
| Country | Link |
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| CN (1) | CN202562876U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959632A (en) * | 2017-03-04 | 2017-07-18 | 长沙开雅电子科技有限公司 | A kind of tester for alcohol concentration |
| CN109177981A (en) * | 2018-10-31 | 2019-01-11 | 钟祥博谦信息科技有限公司 | The anti-control system of driving when intoxicated of one kind |
-
2012
- 2012-05-28 CN CN2012202517146U patent/CN202562876U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959632A (en) * | 2017-03-04 | 2017-07-18 | 长沙开雅电子科技有限公司 | A kind of tester for alcohol concentration |
| CN109177981A (en) * | 2018-10-31 | 2019-01-11 | 钟祥博谦信息科技有限公司 | The anti-control system of driving when intoxicated of one kind |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |