CN105572172A - Novel alcohol tester based on signal conditioning circuit - Google Patents
Novel alcohol tester based on signal conditioning circuit Download PDFInfo
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- CN105572172A CN105572172A CN201510970723.9A CN201510970723A CN105572172A CN 105572172 A CN105572172 A CN 105572172A CN 201510970723 A CN201510970723 A CN 201510970723A CN 105572172 A CN105572172 A CN 105572172A
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Abstract
The invention discloses a novel alcohol tester based on a signal conditioning circuit, mainly comprising: a central processing unit; a power source, a lighting drive circuit, a storage, a display, an alarm, an alcohol detection module and a camera that are connected separately with the central processing unit; and a light connected with the lighting drive circuit. The tester is characterized in that the signal conditioning circuit is serially connected between the alcohol detection module and the central processing unit. The tester enables facial and head information of a person under testing to be extracted, bringing convenience for related law-enforcing departments to enforce the law. The signal condition circuit which is set in the invention can nonlinearly correct a signal output by the alcohol detection module and converts into an electrical transmitted to the central processing unit, the processed signal has higher fidelity, and thus it is possible to improve the detection precision of the tester.
Description
Technical field
The present invention relates to a kind of detector, specifically refer to a kind of Novel alcohol detector based on signal conditioning circuit.
Background technology
Nowadays, traffic administration department has continually strengthened the investigation and punishment dynamics of driving when intoxicated, effectively to reduce the pernicious traffic hazard caused because driving when intoxicated, it usually adopts alcohol content tester to check driver's alcohol content of exhalation gas concentration and in this, as the foundation of driver's whether drunk driving in investigation process.But existing alcohol content tester can not extract detected personnel face head portrait image information in time, brings certain inconvenience to the law-enforcing work of law enforcement.
Summary of the invention
The object of the invention is to overcome the defect that traditional alcohol content tester can not extract detected personnel face head portrait image information in time, a kind of Novel alcohol detector based on signal conditioning circuit is provided.
Object of the present invention is achieved through the following technical solutions: a kind of Novel alcohol detector based on signal conditioning circuit, primarily of central processing unit, the power supply be connected with central processing unit respectively, illumination driving circuit, reservoir, display, alarm, alcohol detection module and camera, and the illuminating lamp be connected with illumination driving circuit forms; In order to better implement the present invention, the present invention is also serially connected with signal conditioning circuit between alcohol detection module and central processing unit.
Further, described signal conditioning circuit is by conversion chip U1, triode VT5, positive pole is connected with the OSC1 pin of conversion chip U1, the electric capacity C6 that negative pole is then connected with the OSC3 pin of conversion chip U1, the resistance R11 be in parallel with electric capacity C6, positive pole is connected with the IN+ pin of conversion chip U1, the electric capacity C5 that negative pole is then connected with the emitter of triode VT5, N pole is connected with the COM pin of conversion chip U1 after resistance R10, the diode D4 of P pole ground connection, one end is connected with the positive pole of electric capacity C5, the resistance R9 that the other end is then connected with the P pole of diode D4 after potentiometer R8, positive pole is connected with the CR+ pin of conversion chip U1, the electric capacity C7 that negative pole is then connected with the CR-pin of conversion chip U1, the resistance R12 be in parallel with electric capacity C7, and one end is connected with the AZ pin of conversion chip U1, the resistance R13 that the other end then forms the output terminal of this signal conditioning circuit forms, the emitter of described triode VT5 is connected with the control end of potentiometer R8, and its collector is then connected with the N pole of diode D4, and its base stage is then connected with REFLO pin with the IN-pin of conversion chip U1 simultaneously, described resistance R9 then forms the input end of this signal conditioning circuit with the tie point of potentiometer R8 and is connected with alcohol detection module, the output terminal of described signal conditioning circuit is then connected with central processing unit.
Described illumination driving circuit is by on-off circuit, and the driving circuit be connected with on-off circuit forms; The input end of described illumination driving circuit is connected with central processing unit, and its output terminal is then connected with illuminating lamp.
Described on-off circuit is by process chip U, triode VT1, N pole is connected with the BOOT pin of process chip U, P pole is then in turn through diode D1 that resistance R1 is connected with the SW pin of process chip U after resistance R3, positive pole is connected with the P pole of diode D1 after resistance R2, the electric capacity C1 of ground connection while negative pole is then connected with the GND pin of process chip U, be serially connected in the resistance R4 between the RON pin of process chip U and the emitter of triode VT1, N pole is connected with the CS pin of process chip U, P pole is the diode D2 of ground connection after resistance R5 then, and positive pole is connected with the P pole of diode D2, the electric capacity C2 that negative pole is then connected with driving circuit forms, the base stage of described triode VT1 is connected with the CS pin of process chip U, its collector and emitter is then all connected with driving circuit, the VIN pin of described process chip U connects 12V voltage, and its VCC pin is then connected with the tie point of resistance R3 with resistance R1 with VIN pin simultaneously, and its DIM pin then forms the input end of this illumination driving circuit and is connected with central processing unit.
Described driving circuit is by triode VT2, triode VT3, triode VT4, field effect transistor MOS, the resistance R6 that one end is connected with the emitter of triode VT1, the other end is then connected with the base stage of triode VT2, the electric capacity C3 that positive pole is connected with the emitter of triode VT2 after resistance R7, negative pole is then connected with the collector of triode VT3, the diode D3 that P pole is connected with the collector of triode VT4, N pole is then connected with the source electrode of field effect transistor MOS, and negative pole is connected with the N pole of diode D3 after inductance L 1, the electric capacity C4 of plus earth forms; The collector of described triode VT2 is connected with the negative pole of electric capacity C4 with the collector of triode VT1 simultaneously; The base stage of described triode VT3 is connected with the negative pole of electric capacity C2, and its collector is then connected with the drain electrode of field effect transistor MOS, and its emitter is then connected with the emitter of triode VT4; The base stage of described triode VT4 is connected with the base stage of triode VT3, and its emitter is then connected with the grid of field effect transistor MOS; The drain electrode of described field effect transistor MOS then jointly forms the output terminal of this illumination driving circuit with source electrode and is connected with illuminating lamp.
Described process chip U is A718EFT integrated chip, and described conversion chip U1 is ICL7107CPL integrated chip.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention can extract detected personnel face head image information, brings facility to the law-enforcing work of law enforcement.
(2) the present invention is provided with assist illuminator, thus the tested personnel's facial information taken by the present invention can be made more clear, confirms so that law enfrocement official is follow-up tested personnel's information.
(3) the present invention is provided with signal conditioning circuit, this signal conditioning circuit can carry out gamma correction to the signal that alcohol detection module exports, and be converted to electric signal and send to central processing unit, signal fidelity is after treatment higher, therefore can improve accuracy of detection of the present invention.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the structural representation of illumination driving circuit of the present invention.
Fig. 3 is the structural representation of signal conditioning circuit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the present invention is based on the Novel alcohol detector of signal conditioning circuit, primarily of central processing unit, the power supply be connected with central processing unit respectively, illumination driving circuit, reservoir, display, alarm, signal conditioning circuit and camera, the alcohol detection module be connected with signal conditioning circuit, and the illuminating lamp be connected with illumination driving circuit forms.
The MQ303B type alcohol sensor that this alcohol detection module adopts dredging collateral Science and Technology Ltd. of Shenzhen to produce.Signal conditioning circuit can carry out gamma correction to the signal that alcohol detection module exports, and is converted to electric signal and sends to central processing unit, and signal fidelity is after treatment higher, as shown in Figure 3, it is by conversion chip U1, triode VT5, potentiometer R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, electric capacity C5, electric capacity C6, electric capacity C7 and diode D4 form.
During connection, the positive pole of electric capacity C6 is connected with the OSC1 pin of conversion chip U1, its negative pole is then connected with the OSC3 pin of conversion chip U1.Resistance R11 and electric capacity C6 is in parallel.The positive pole of electric capacity C5 is connected with the IN+ pin of conversion chip U1, its negative pole is then connected with the emitter of triode VT5.The N pole of diode D4 is connected with the COM pin of conversion chip U1 after resistance R10, its P pole ground connection.One end of resistance R9 is connected with the positive pole of electric capacity C5, its other end is then connected with the P pole of diode D4 after potentiometer R8.The positive pole of electric capacity C7 is connected with the CR+ pin of conversion chip U1, its negative pole is then connected with the CR-pin of conversion chip U1.Resistance R12 and electric capacity C7 is in parallel.One end of resistance R13 is connected with the AZ pin of conversion chip U1, its other end then forms the output terminal of this signal conditioning circuit and is connected with central processing unit.The emitter of described triode VT5 is connected with the control end of potentiometer R8, and its collector is then connected with the N pole of diode D4, and its base stage is then connected with REFLO pin with the IN-pin of conversion chip U1 simultaneously.Described resistance R9 then forms the input end of this signal conditioning circuit with the tie point of potentiometer R8 and is connected with alcohol detection module.
Wherein, this triode VT5, electric capacity C5, diode D4, resistance R9 and potentiometer R8 form a nonlinearity correction circuit, and signal fidelity after this nonlinearity correction circuit process of input is higher.Signal after nonlinearity correction circuit process is converted to electric signal by conversion chip U1 again and exports to central processing unit.In order to reach better implementation result, described conversion chip U1 is preferably ICL7107CPL integrated chip.
In addition, central processing unit is then control center of the present invention, and it preferentially adopts TA89C2051 type single-chip microcomputer to realize.The VCC pin of this TA89C2051 type single-chip microcomputer connects power supply, its XTAL1 pin then connects the output terminal of signal conditioning circuit, its XTAL2 pin then connects camera, P3.2 pin device taking alarm, its P3.3 pin then connects display, P3.4 pin connects reservoir, and its P3.5 pin then connects the input end of illumination driving circuit.This power supply is used for providing working power to central processing unit, camera is for gathering the facial information of detected personnel, display is for the face image of the alcohol concentration value and detected personnel that show detected personnel, and reservoir is then for storing detected personnel's facial image information and its alcohol concentration value.This illumination driving circuit is then for driving illuminating lamp work.
As shown in Figure 2, this illumination driving circuit is by on-off circuit, and the driving circuit be connected with on-off circuit forms.The input end of described illumination driving circuit is connected with central processing unit, and its output terminal is then connected with illuminating lamp.
Wherein, described on-off circuit is by process chip U, and triode VT1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1, electric capacity C2, diode D1 and diode D2 form.
During connection, the N pole of diode D1 is connected with the BOOT pin of process chip U, its P pole is then connected with the SW pin of process chip U after resistance R3 through resistance R1 in turn.Ground connection while the positive pole of electric capacity C1 is connected with the P pole of diode D1 after resistance R2, its negative pole is then connected with the GND pin of process chip U.Resistance R4 is serially connected between the RON pin of process chip U and the emitter of triode VT1.The N pole of diode D2 is connected with the CS pin of process chip U, its P pole then ground connection after resistance R5.The positive pole of electric capacity C2 is connected with the P pole of diode D2, its negative pole is then connected with driving circuit.
Meanwhile, the base stage of described triode VT1 is connected with the CS pin of process chip U, its collector and emitter is then all connected with driving circuit.The VIN pin of described process chip U connects 12V voltage, its VCC pin is then connected with the tie point of resistance R3 with resistance R1 with VIN pin simultaneously, and its DIM pin then forms the input end of this illumination driving circuit and is connected with the P3.5 pin of TA89C2051 type single-chip microcomputer.
Described driving circuit is by triode VT2, and triode VT3, triode VT4, field effect transistor MOS, resistance R6, resistance R7, electric capacity C3, inductance L 1, diode D3 and electric capacity C4 forms.
Wherein, one end of resistance R6 is connected with the emitter of triode VT1, its other end is then connected with the base stage of triode VT2.The positive pole of electric capacity C3 is connected with the emitter of triode VT2 after resistance R7, its negative pole is then connected with the collector of triode VT3.The P pole of diode D3 is connected with the collector of triode VT4, its N pole is then connected with the source electrode of field effect transistor MOS.The negative pole of electric capacity C4 is connected with the N pole of diode D3 after inductance L 1, its plus earth.
The collector of this triode VT2 is connected with the negative pole of electric capacity C4 with the collector of triode VT1 simultaneously.The base stage of described triode VT3 is connected with the negative pole of electric capacity C2, and its collector is then connected with the drain electrode of field effect transistor MOS, and its emitter is then connected with the emitter of triode VT4.The base stage of described triode VT4 is connected with the base stage of triode VT3, and its emitter is then connected with the grid of field effect transistor MOS.The drain electrode of described field effect transistor MOS then jointly forms the output terminal of this illumination driving circuit with source electrode and is connected with illuminating lamp.
After central processing unit has signal to input illumination driving circuit, by process chip U, diode D1, resistance R1, resistance R2, the oscillatory circuit that electric capacity C1 forms starts starting of oscillation, at this moment the RON pin of process chip U and CS pin then outputting oscillation signal make triode VT1 conducting, thus make the buffering drive circuit work that is made up of triode VT2, triode VT3, triode VT4 and field effect transistor MOS, this buffering drive circuit is then linear to be driven illuminating lamp, makes the work that illuminating lamp is stable.In order to reach better implementation result, described process chip U is preferably A718EFT integrated chip to realize.
During work, whether containing alcohol in the gas that alcohol detection module detection tested personnel breathes out, if containing alcohol, this alcohol detection module then sends the strength signal corresponding to alcohol concentration to signal conditioning circuit, signal sends to central processing unit after signal conditioning circuit process, the signal that central authorities process smart detection module output of filling a wine cup for is converted to alcohol concentration signal and sends to alarm and display respectively, and alarm is sounded the alarm, and display then demonstrates alcohol concentration value.Simultaneously, central processing unit also sends command signal to illumination driving circuit and camera, make illumination driving circuit drive illumination lamp ignition, camera is then taken detected personnel's face image signal and is sent to central processing unit, and central processing unit then sends to reservoir to store picture signal.Make the image definition that photographs higher by the irradiation of illuminating lamp.
As mentioned above, just well the present invention can be realized.
Claims (6)
1. the Novel alcohol detector based on signal conditioning circuit, primarily of central processing unit, the power supply be connected with central processing unit respectively, illumination driving circuit, reservoir, display, alarm, alcohol detection module and camera, and the illuminating lamp be connected with illumination driving circuit forms; It is characterized in that, between alcohol detection module and central processing unit, be also serially connected with signal conditioning circuit.
2. a kind of Novel alcohol detector based on signal conditioning circuit according to claim 1, it is characterized in that: described signal conditioning circuit is by conversion chip U1, triode VT5, positive pole is connected with the OSC1 pin of conversion chip U1, the electric capacity C6 that negative pole is then connected with the OSC3 pin of conversion chip U1, the resistance R11 be in parallel with electric capacity C6, positive pole is connected with the IN+ pin of conversion chip U1, the electric capacity C5 that negative pole is then connected with the emitter of triode VT5, N pole is connected with the COM pin of conversion chip U1 after resistance R10, the diode D4 of P pole ground connection, one end is connected with the positive pole of electric capacity C5, the resistance R9 that the other end is then connected with the P pole of diode D4 after potentiometer R8, positive pole is connected with the CR+ pin of conversion chip U1, the electric capacity C7 that negative pole is then connected with the CR-pin of conversion chip U1, the resistance R12 be in parallel with electric capacity C7, and one end is connected with the AZ pin of conversion chip U1, the resistance R13 that the other end then forms the output terminal of this signal conditioning circuit forms, the emitter of described triode VT5 is connected with the control end of potentiometer R8, and its collector is then connected with the N pole of diode D4, and its base stage is then connected with REFLO pin with the IN-pin of conversion chip U1 simultaneously, described resistance R9 then forms the input end of this signal conditioning circuit with the tie point of potentiometer R8 and is connected with alcohol detection module, the output terminal of described signal conditioning circuit is then connected with central processing unit.
3. a kind of Novel alcohol detector based on signal conditioning circuit according to claim 2, is characterized in that: described illumination driving circuit is by on-off circuit, and the driving circuit be connected with on-off circuit forms; The input end of described illumination driving circuit is connected with central processing unit, and its output terminal is then connected with illuminating lamp.
4. a kind of Novel alcohol detector based on signal conditioning circuit according to claim 3, it is characterized in that: described on-off circuit is by process chip U, triode VT1, N pole is connected with the BOOT pin of process chip U, P pole is then in turn through diode D1 that resistance R1 is connected with the SW pin of process chip U after resistance R3, positive pole is connected with the P pole of diode D1 after resistance R2, the electric capacity C1 of ground connection while negative pole is then connected with the GND pin of process chip U, be serially connected in the resistance R4 between the RON pin of process chip U and the emitter of triode VT1, N pole is connected with the CS pin of process chip U, P pole is the diode D2 of ground connection after resistance R5 then, and positive pole is connected with the P pole of diode D2, the electric capacity C2 that negative pole is then connected with driving circuit forms, the base stage of described triode VT1 is connected with the CS pin of process chip U, its collector and emitter is then all connected with driving circuit, the VIN pin of described process chip U connects 12V voltage, and its VCC pin is then connected with the tie point of resistance R3 with resistance R1 with VIN pin simultaneously, and its DIM pin then forms the input end of this illumination driving circuit and is connected with central processing unit.
5. a kind of Novel alcohol detector based on signal conditioning circuit according to claim 4, it is characterized in that: described driving circuit is by triode VT2, triode VT3, triode VT4, field effect transistor MOS, one end is connected with the emitter of triode VT1, the resistance R6 that the other end is then connected with the base stage of triode VT2, positive pole is connected with the emitter of triode VT2 after resistance R7, the electric capacity C3 that negative pole is then connected with the collector of triode VT3, P pole is connected with the collector of triode VT4, the diode D3 that N pole is then connected with the source electrode of field effect transistor MOS, and negative pole is connected with the N pole of diode D3 after inductance L 1, the electric capacity C4 of plus earth forms, the collector of described triode VT2 is connected with the negative pole of electric capacity C4 with the collector of triode VT1 simultaneously, the base stage of described triode VT3 is connected with the negative pole of electric capacity C2, and its collector is then connected with the drain electrode of field effect transistor MOS, and its emitter is then connected with the emitter of triode VT4, the base stage of described triode VT4 is connected with the base stage of triode VT3, and its emitter is then connected with the grid of field effect transistor MOS, the drain electrode of described field effect transistor MOS then jointly forms the output terminal of this illumination driving circuit with source electrode and is connected with illuminating lamp.
6. a kind of Novel alcohol detector based on signal conditioning circuit according to claim 5, it is characterized in that: described process chip U is A718EFT integrated chip, described conversion chip U1 is ICL7107CPL integrated chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510970723.9A CN105572172A (en) | 2015-12-21 | 2015-12-21 | Novel alcohol tester based on signal conditioning circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510970723.9A CN105572172A (en) | 2015-12-21 | 2015-12-21 | Novel alcohol tester based on signal conditioning circuit |
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| CN105572172A true CN105572172A (en) | 2016-05-11 |
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| CN201510970723.9A Withdrawn CN105572172A (en) | 2015-12-21 | 2015-12-21 | Novel alcohol tester based on signal conditioning circuit |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381721A (en) * | 2002-06-04 | 2002-11-27 | 复旦大学 | Portable intelligent electronic nose and its preparing process |
| AU2008336091A1 (en) * | 2007-12-05 | 2009-06-18 | Buchi Labortechnik Ag | Methods and apparatus for detecting and collecting sample components |
| CN201302568Y (en) * | 2008-12-05 | 2009-09-02 | 郑州畅想自动化设备有限公司 | Drinking detection system |
| CN101969490A (en) * | 2010-11-03 | 2011-02-09 | 何纪承 | Mobile phone capable of detecting alcohol concentration |
| CN102642467A (en) * | 2011-12-12 | 2012-08-22 | 浙江吉利汽车研究院有限公司 | Drunk driving prevention processing system for automobile and control method |
| CN103837574A (en) * | 2012-11-27 | 2014-06-04 | 陕西亚泰电器科技有限公司 | Alcohol concentration tester |
-
2015
- 2015-12-21 CN CN201510970723.9A patent/CN105572172A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381721A (en) * | 2002-06-04 | 2002-11-27 | 复旦大学 | Portable intelligent electronic nose and its preparing process |
| AU2008336091A1 (en) * | 2007-12-05 | 2009-06-18 | Buchi Labortechnik Ag | Methods and apparatus for detecting and collecting sample components |
| CN201302568Y (en) * | 2008-12-05 | 2009-09-02 | 郑州畅想自动化设备有限公司 | Drinking detection system |
| CN101969490A (en) * | 2010-11-03 | 2011-02-09 | 何纪承 | Mobile phone capable of detecting alcohol concentration |
| CN102642467A (en) * | 2011-12-12 | 2012-08-22 | 浙江吉利汽车研究院有限公司 | Drunk driving prevention processing system for automobile and control method |
| CN103837574A (en) * | 2012-11-27 | 2014-06-04 | 陕西亚泰电器科技有限公司 | Alcohol concentration tester |
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Application publication date: 20160511 |
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