CN105628907A - Detection amplification circuit based multifunctional novel alcohol detector - Google Patents
Detection amplification circuit based multifunctional novel alcohol detector Download PDFInfo
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Abstract
The invention discloses a detection amplification circuit based multifunctional novel alcohol detector. The detector is characterized by mainly comprising a central processor, a power supply, an illumination driving circuit, a memory, a display, an alarm, an alcohol detection module, a detection amplification circuit, a signal denoising circuit, a camera and an illumination lamp, wherein the power supply, the illumination driving circuit, the memory, the display, the alarm, the alcohol detection module and the detection amplification circuit are connected with the central processor respectively; the signal denoising circuit is connected with the detection amplification circuit; the camera is connected with the signal denoising circuit; the illumination lamp is connected with the illumination driving circuit; and a control end of the camera is further connected with the central processor. According to the detector, face portrait information of a detected person can be extracted, so that the convenience is brought for law enforcement work of related law enforcement departments. The detector is provided with the detection amplification circuit, and the detection amplification circuit can separate out an image signal to block an interference signal and amplify the image signal to avoid the interference of signal image display definition.
Description
Technical field
The present invention relates to a kind of detector, specifically refer to a kind of Multifucntional alcohol content tester based on detector amplifier.
Background technology
Nowadays, traffic administration department has continually strengthened the investigation and punishment dynamics driven when intoxicated, effectively to reduce the pernicious vehicle accident caused because driving when intoxicated, it generally adopts alcohol content tester to check driver's alcohol content of exhalation gas concentration the foundation in this, as 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
It is an object of the invention to the defect overcoming traditional alcohol content tester can not extract detected personnel face head portrait image information in time, it is provided that a kind of Multifucntional alcohol content tester based on detector amplifier.
The purpose of the present invention is achieved through the following technical solutions: a kind of Multifucntional alcohol content tester based on detector amplifier, main by central processing unit, power supply, illumination driving circuit, bin, display, alarm, alcohol detection module and the detector amplifier being connected with central processing unit respectively, the signal de-noising circuit being connected with detector amplifier, the photographic head being connected with signal de-noising circuit, and the illuminating lamp composition being connected with illumination driving circuit; The control end of described photographic head is also connected with central processing unit.
Further, described detector amplifier is by amplifier P3, audion VT7, audion VT8, field effect transistor MOS2, positive pole is connected with the positive pole of amplifier P3, the polar capacitor C10 of minus earth, negative pole is connected with the grid of field effect transistor MOS2, positive pole then forms the polar capacitor C9 of the input of this detector amplifier, positive pole is connected with the source electrode of field effect transistor MOS2, the polar capacitor C11 that negative pole is then connected with the grid of field effect transistor MOS2 after resistance R15, it is serially connected in the potentiometer R17 between the source electrode of field effect transistor MOS2 and the negative pole of polar capacitor C11, one end is connected with the drain electrode of field effect transistor MOS2, the resistance R16 of another termination 12V voltage, P pole is connected with the drain electrode of field effect transistor MOS2, the diode D6 that N pole is then connected with the colelctor electrode of audion VT7, it is serially connected in the resistance R19 between the base stage of audion VT7 and the negative pole of polar capacitor C11, it is serially connected in the resistance R18 between the negative pole of amplifier P3 and the emitter stage of audion VT7, it is serially connected in the resistance R20 between the outfan of amplifier P3 and the emitter stage of audion VT8, and it is serially connected in the resistance R21 composition between the colelctor electrode of audion VT8 and the negative pole of polar capacitor C11, the positive pole of described polar capacitor C11 is connected with the control end of potentiometer R17, the base stage of described audion VT8 is connected with the emitter stage of audion VT7, and its emitter stage then forms the outfan of this detector amplifier and is connected with central processing unit, the input of described detector amplifier is then connected with the outfan of signal de-noising circuit.
Described signal de-noising electricity routing amplifier P1, amplifier P2, audion VT5, audion VT6, field effect transistor MOS1, negative pole is connected with the base stage of audion VT5, positive pole then forms the electric capacity C5 of the input of this signal de-noising circuit, positive pole is connected with the negative pole of electric capacity C5 after resistance R8, the electric capacity C6 that negative pole is then connected with the grid of field effect transistor MOS1 after diode D5, positive pole connects 12V voltage, the electric capacity C7 that negative pole is then connected with the positive pole of amplifier P1 after diode D4, it is serially connected in the resistance R10 between the emitter stage of audion VT5 and the positive pole of electric capacity C7, it is serially connected in the resistance R11 between positive pole and the grid of field effect transistor MOS1 of electric capacity C7, it is serially connected in the resistance R9 between the colelctor electrode of audion VT5 and the negative pole of amplifier P2, it is serially connected in the resistance R12 between the positive pole of amplifier P2 and the emitter stage of audion VT6, it is serially connected in the resistance R13 between the outfan of amplifier P2 and the base stage of audion VT6, it is serially connected in the inductance L2 between the drain electrode of field effect transistor MOS1 and the outfan of amplifier P1, and positive pole is connected with the outfan of amplifier P1 after resistance R14, negative pole then forms the electric capacity C8 composition of the outfan of this signal de-noising circuit, the negative pole of described amplifier P1 is connected with the colelctor electrode of audion VT5, and its outfan is then connected with the emitter stage of audion VT6, the grounded collector of described audion VT6, the source electrode of described field effect transistor MOS1 is connected with the positive pole of electric capacity C8, the input of described signal de-noising circuit is connected with photographic head, and its outfan is then connected with the input of detector amplifier.
Described illumination driving circuit is by on-off circuit, and the drive circuit being connected with on-off circuit forms; The input of described illumination driving circuit is connected with central processing unit, and its outfan is then connected with illuminating lamp.
Described on-off circuit is by processing chip U, audion VT1, N pole is connected with the BOOT pin processing chip U, P pole is then sequentially through the resistance R1 diode D1 being connected with the SW pin processing chip U after resistance R3, positive pole P pole with diode D1 after resistance R2 is connected, negative pole be then connected with the GND pin processing chip U while the electric capacity C1 of ground connection, it is serially connected in the resistance R4 between the RON pin and the emitter stage of audion VT1 that process chip U, N pole is connected with the CS pin processing 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 composition that negative pole is then connected with drive circuit, the base stage of described audion VT1 is connected with the CS pin processing chip U, its collector and emitter is then all connected with drive circuit, the VIN pin of described process chip U connects 12V voltage, and its VCC pin is then connected with the junction point of VIN pin and resistance R1 and resistance R3 simultaneously, and its DIM pin then forms the input of this illumination driving circuit and is connected with central processing unit.
Described drive circuit is by audion VT2, audion VT3, audion VT4, field effect transistor MOS, the resistance R6 that one end is connected with the emitter stage of audion VT1, the other end is then connected with the base stage of audion VT2, the electric capacity C3 that positive pole is connected with the emitter stage of audion VT2 after resistance R7, negative pole is then connected with the colelctor electrode of audion VT3, the diode D3 that P pole is connected with the colelctor electrode of audion VT4, N pole is then connected with the source electrode of field effect transistor MOS, and negative pole N pole with diode D3 after inductance L1 is connected, the electric capacity C4 composition of plus earth; The colelctor electrode of described audion VT2 is connected with the colelctor electrode of audion VT1 and the negative pole of electric capacity C4 simultaneously; The base stage of described audion VT3 is connected with the negative pole of electric capacity C2, and its colelctor electrode is then connected with the drain electrode of field effect transistor MOS, and its emitter stage is then connected with the emitter stage of audion VT4; The base stage of described audion VT4 is connected with the base stage of audion VT3, and its emitter stage is then connected with the grid of field effect transistor MOS; The drain electrode of described field effect transistor MOS is then collectively forming the outfan of this illumination driving circuit and is connected with illuminating lamp with source electrode.
Described process chip U is A718EFT integrated chip.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) present invention can extract detected personnel face head image information, brings facility to the law-enforcing work of law enforcement.
(2) present invention is provided with assist illuminator, such that it is able to make the tested personnel's facial information taken by the present invention become apparent from, in order to law enfrocement official is follow-up to be confirmed tested personnel's information.
(3) present invention is provided with signal de-noising circuit, and the interference signal being entrained in picture signal can be suppressed by it, makes picture signal purer, and the face image that therefore display shows becomes apparent from.
(4) present invention is provided with detector amplifier, and it can be isolated picture signal and interference signal carries out resistance section, and picture signal is amplified, it is to avoid the definition that interference signal pattern shows.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of the illumination driving circuit of the present invention.
Fig. 3 is the structural representation of the signal de-noising circuit of the present invention.
Fig. 4 is the structural representation of the detector amplifier of the present invention.
Detailed description of the invention
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 Multifucntional alcohol content tester based on detector amplifier of the present invention, main by central processing unit, power supply, illumination driving circuit, bin, display, alarm, alcohol detection module and the detector amplifier being connected with central processing unit respectively, the signal de-noising circuit being connected with detector amplifier, the photographic head being connected with signal de-noising circuit, and the illuminating lamp composition being connected with illumination driving circuit; The control end of described photographic head is also connected with central processing unit.
This alcohol detection module adopts the MQ303B type alcohol sensor that dredging collateral Science and Technology Ltd. of Shenzhen produces. The interference signal being entrained in picture signal can be suppressed by signal de-noising circuit, makes picture signal purer, and its structure is as it is shown on figure 3, by amplifier P1, amplifier P2, audion VT5, audion VT6, field effect transistor MOS1, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, diode D4, inductance L2 and diode D5 form.
During connection, the negative pole of electric capacity C5 is connected with the base stage of audion VT5, its positive pole then forms the input of this signal de-noising circuit and is connected with the signal output part of photographic head. The positive pole of electric capacity C6 is connected with the negative pole of electric capacity C5 after resistance R8, its negative pole is then connected with the N pole of diode D5. The P pole of described diode D5 is then connected with the grid of field effect transistor MOS1. The positive pole of electric capacity C7 connects 12V voltage, its negative pole and is then connected with the N pole of diode D4. The P pole of described diode D4 is then connected with the positive pole of amplifier P1. Resistance R10 is serially connected between the emitter stage of audion VT5 and the positive pole of electric capacity C7. Resistance R11 is serially connected between positive pole and the grid of field effect transistor MOS1 of electric capacity C7. Resistance R9 is serially connected between the colelctor electrode of audion VT5 and the negative pole of amplifier P2. Resistance R12 is serially connected between the positive pole of amplifier P2 and the emitter stage of audion VT6. Resistance R13 is serially connected between the outfan of amplifier P2 and the base stage of audion VT6. Inductance L2 is serially connected between the drain electrode of field effect transistor MOS1 and the outfan of amplifier P1. The positive pole of electric capacity C8 is connected with the outfan of amplifier P1 after resistance R14, its negative pole then forms the outfan of this signal de-noising circuit and is connected with the input of detector amplifier. The negative pole of described amplifier P1 is connected with the colelctor electrode of audion VT5, and its outfan is then connected with the emitter stage of audion VT6. The grounded collector of described audion VT6. The source electrode of described field effect transistor MOS1 is connected with the positive pole of electric capacity C8.
By signal de-noising circuit, the interference signal adulterated in the signal is suppressed after signal is input to signal de-noising circuit. This amplifier P2, resistance R13 and audion VT6 composition compensates circuit, and it can compensate the loss that signal occurs in processing procedure.
Detector amplifier can be isolated picture signal and interference signal carries out resistance section, and picture signal is amplified, it is to avoid the definition that interference signal pattern shows, its structure as shown in Figure 4, by amplifier P3, audion VT7, audion VT8, field effect transistor MOS2, resistance R15, resistance R16, potentiometer R17, resistance R18, resistance R19, resistance R20, resistance R21, polar capacitor C9, polar capacitor C10, polar capacitor C11 and diode D6 form.
During connection, the positive pole of polar capacitor C10 is connected with the positive pole of amplifier P3, its minus earth. The negative pole of polar capacitor C9 is connected with the grid of field effect transistor MOS2, its positive pole then forms the input of this detector amplifier and is connected with the outfan of signal de-noising circuit. The positive pole of polar capacitor C11 is connected with the source electrode of field effect transistor MOS2, its negative pole then after resistance R15 grid with field effect transistor MOS2 be connected. Potentiometer R17 is serially connected between the source electrode of field effect transistor MOS2 and the negative pole of polar capacitor C11. One end of resistance R16 is connected with the drain electrode of field effect transistor MOS2, its another termination 12V voltage. The P pole of diode D6 is connected with the drain electrode of field effect transistor MOS2, its N pole is then connected with the colelctor electrode of audion VT7. Resistance R19 is serially connected between the base stage of audion VT7 and the negative pole of polar capacitor C11. Resistance R18 is serially connected between the negative pole of amplifier P3 and the emitter stage of audion VT7. Resistance R20 is serially connected between the outfan of amplifier P3 and the emitter stage of audion VT8. Resistance R21 is serially connected between the colelctor electrode of audion VT8 and the negative pole of polar capacitor C11.
Meanwhile, the positive pole of described polar capacitor C11 is connected with the control end of potentiometer R17. The base stage of described audion VT8 is connected with the emitter stage of audion VT7, and its emitter stage then forms the outfan of this detector amplifier and is connected with central processing unit. The input of described detector amplifier is then connected with the outfan of signal de-noising circuit.
Central processing unit is then the control centre 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 signal output part of alcohol detection module, its XTAL2 pin then connects the outfan of detector amplifier, its RST pin then connects the control end of photographic head, P3.2 pin device taking alarm, its P3.3 pin then connects display, and P3.4 pin connects bin, and its P3.5 pin then connects the input of illumination driving circuit. This power supply is for providing working power to central processing unit, photographic head is for gathering the facial information of detected personnel, display is for showing the alcohol concentration value of detected personnel and the face image of detected personnel, and bin is then used for storing detected personnel's facial image information and its alcohol concentration value. This illumination driving circuit is then used for driving illuminating lamp to work.
As in figure 2 it is shown, this illumination driving circuit is by on-off circuit, the drive circuit being connected with on-off circuit forms. The input of described illumination driving circuit is connected with central processing unit, and its outfan is then connected with illuminating lamp.
Wherein, described on-off circuit is by processing chip U, and audion VT1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1, electric capacity C2, diode D1 and diode D2 forms.
During connection, the N pole of diode D1 is connected with the BOOT pin processing chip U, its P pole is then sequentially connected with the SW pin processing chip U after resistance R1 and resistance R3. Ground connection while the positive pole of electric capacity C1 P pole with diode D1 after resistance R2 is connected, its negative pole is then connected with the GND pin processing chip U. Resistance R4 is serially connected between RON pin and the emitter stage of audion VT1 processing chip U. The N pole of diode D2 is connected with the CS pin processing 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 drive circuit.
Meanwhile, the base stage of described audion VT1 is connected with the CS pin processing chip U, its collector and emitter is then all connected with drive circuit. The VIN pin of described process chip U connects 12V voltage, its VCC pin is then connected with the junction point of VIN pin and resistance R1 and resistance R3 simultaneously, and its DIM pin then forms the input of this illumination driving circuit and is connected with the P3.5 pin of TA89C2051 type single-chip microcomputer.
Described drive circuit is made up of audion VT2, audion VT3, audion VT4, field effect transistor MOS, resistance R6, resistance R7, electric capacity C3, inductance L1, diode D3 and electric capacity C4.
Wherein, one end of resistance R6 is connected with the emitter stage of audion VT1, its other end is then connected with the base stage of audion VT2. The positive pole of electric capacity C3 is connected with the emitter stage of audion VT2 after resistance R7, its negative pole is then connected with the colelctor electrode of audion VT3. The P pole of diode D3 is connected with the colelctor electrode of audion VT4, its N pole is then connected with the source electrode of field effect transistor MOS. The negative pole of electric capacity C4 N pole with diode D3 after inductance L1 is connected, its plus earth.
The colelctor electrode of this audion VT2 is connected with the colelctor electrode of audion VT1 and the negative pole of electric capacity C4 simultaneously. The base stage of described audion VT3 is connected with the negative pole of electric capacity C2, and its colelctor electrode is then connected with the drain electrode of field effect transistor MOS, and its emitter stage is then connected with the emitter stage of audion VT4. The base stage of described audion VT4 is connected with the base stage of audion VT3, and its emitter stage is then connected with the grid of field effect transistor MOS. The drain electrode of described field effect transistor MOS is then collectively forming the outfan of this illumination driving circuit and is connected with illuminating lamp with source electrode.
After central processing unit has signal input illumination driving circuit, by processing chip U, diode D1, resistance R1, resistance R2, the oscillating circuit that electric capacity C1 forms starts starting of oscillation, at this moment the RON pin and the CS pin then outputting oscillation signal that process chip U make audion VT1 turn on, so that the buffering drive circuit work being made up of audion VT2, audion VT3, audion 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 and realizes.
During work, whether the gas that alcohol detection module detection tested personnel breathes out contains ethanol, if containing ethanol, this alcohol detection module then sends strength signal corresponding with alcohol concentration to central processing unit, central authorities process the signal of essence detection module output of filling a wine cup for and are converted to alcohol concentration signal and are sent respectively to alarm and display, making alarm sound the alarm, display then demonstrates alcohol concentration value. Simultaneously, central processing unit also sends command signal to illumination driving circuit and photographic head, illumination driving circuit is made to drive illumination lamp ignition, photographic head then shoots detected personnel's face image signal and is sent to signal de-noising circuit, signal de-noising circuit is sent to detector amplifier after signal is processed, detector amplifier is sent to central processing unit after signal is processed, central processing unit then sends a signal to bin and stores. Make the image definition photographed higher by the irradiation of illuminating lamp.
As it has been described above, just can well realize the present invention.
Claims (7)
1. the Multifucntional alcohol content tester based on detector amplifier, it is characterized in that, main by central processing unit, power supply, illumination driving circuit, bin, display, alarm, alcohol detection module and the detector amplifier being connected with central processing unit respectively, the signal de-noising circuit being connected with detector amplifier, the photographic head being connected with signal de-noising circuit, and the illuminating lamp composition being connected with illumination driving circuit; The control end of described photographic head is also connected with central processing unit.
2. a kind of Multifucntional alcohol content tester based on detector amplifier according to claim 1, it is characterized in that: described detector amplifier is by amplifier P3, audion VT7, audion VT8, field effect transistor MOS2, positive pole is connected with the positive pole of amplifier P3, the polar capacitor C10 of minus earth, negative pole is connected with the grid of field effect transistor MOS2, positive pole then forms the polar capacitor C9 of the input of this detector amplifier, positive pole is connected with the source electrode of field effect transistor MOS2, the polar capacitor C11 that negative pole is then connected with the grid of field effect transistor MOS2 after resistance R15, it is serially connected in the potentiometer R17 between the source electrode of field effect transistor MOS2 and the negative pole of polar capacitor C11, one end is connected with the drain electrode of field effect transistor MOS2, the resistance R16 of another termination 12V voltage, P pole is connected with the drain electrode of field effect transistor MOS2, the diode D6 that N pole is then connected with the colelctor electrode of audion VT7, it is serially connected in the resistance R19 between the base stage of audion VT7 and the negative pole of polar capacitor C11, it is serially connected in the resistance R18 between the negative pole of amplifier P3 and the emitter stage of audion VT7, it is serially connected in the resistance R20 between the outfan of amplifier P3 and the emitter stage of audion VT8, and it is serially connected in the resistance R21 composition between the colelctor electrode of audion VT8 and the negative pole of polar capacitor C11, the positive pole of described polar capacitor C11 is connected with the control end of potentiometer R17, the base stage of described audion VT8 is connected with the emitter stage of audion VT7, and its emitter stage then forms the outfan of this detector amplifier and is connected with central processing unit, the input of described detector amplifier is then connected with the outfan of signal de-noising circuit.
3. a kind of Multifucntional alcohol content tester based on detector amplifier according to claim 2, it is characterized in that: described signal de-noising electricity routing amplifier P1, amplifier P2, audion VT5, audion VT6, field effect transistor MOS1, negative pole is connected with the base stage of audion VT5, positive pole then forms the electric capacity C5 of the input of this signal de-noising circuit, positive pole is connected with the negative pole of electric capacity C5 after resistance R8, the electric capacity C6 that negative pole is then connected with the grid of field effect transistor MOS1 after diode D5, positive pole connects 12V voltage, the electric capacity C7 that negative pole is then connected with the positive pole of amplifier P1 after diode D4, it is serially connected in the resistance R10 between the emitter stage of audion VT5 and the positive pole of electric capacity C7, it is serially connected in the resistance R11 between positive pole and the grid of field effect transistor MOS1 of electric capacity C7, it is serially connected in the resistance R9 between the colelctor electrode of audion VT5 and the negative pole of amplifier P2, it is serially connected in the resistance R12 between the positive pole of amplifier P2 and the emitter stage of audion VT6, it is serially connected in the resistance R13 between the outfan of amplifier P2 and the base stage of audion VT6, it is serially connected in the inductance L2 between the drain electrode of field effect transistor MOS1 and the outfan of amplifier P1, and positive pole is connected with the outfan of amplifier P1 after resistance R14, negative pole then forms the electric capacity C8 composition of the outfan of this signal de-noising circuit, the negative pole of described amplifier P1 is connected with the colelctor electrode of audion VT5, and its outfan is then connected with the emitter stage of audion VT6, the grounded collector of described audion VT6, the source electrode of described field effect transistor MOS1 is connected with the positive pole of electric capacity C8, the input of described signal de-noising circuit is connected with photographic head, and its outfan is then connected with the input of detector amplifier.
4. a kind of Multifucntional alcohol content tester based on detector amplifier according to claim 3, it is characterised in that: described illumination driving circuit is by on-off circuit, and the drive circuit being connected with on-off circuit forms; The input of described illumination driving circuit is connected with central processing unit, and its outfan is then connected with illuminating lamp.
5. a kind of Multifucntional alcohol content tester based on detector amplifier according to claim 4, it is characterized in that: described on-off circuit is by processing chip U, audion VT1, N pole is connected with the BOOT pin processing chip U, P pole is then sequentially through the resistance R1 diode D1 being connected with the SW pin processing chip U after resistance R3, positive pole P pole with diode D1 after resistance R2 is connected, negative pole be then connected with the GND pin processing chip U while the electric capacity C1 of ground connection, it is serially connected in the resistance R4 between the RON pin and the emitter stage of audion VT1 that process chip U, N pole is connected with the CS pin processing 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 composition that negative pole is then connected with drive circuit, the base stage of described audion VT1 is connected with the CS pin processing chip U, its collector and emitter is then all connected with drive circuit, the VIN pin of described process chip U connects 12V voltage, and its VCC pin is then connected with the junction point of VIN pin and resistance R1 and resistance R3 simultaneously, and its DIM pin then forms the input of this illumination driving circuit and is connected with central processing unit.
6. a kind of Multifucntional alcohol content tester based on detector amplifier according to claim 5, it is characterized in that: described drive circuit is by audion VT2, audion VT3, audion VT4, field effect transistor MOS, one end is connected with the emitter stage of audion VT1, the resistance R6 that the other end is then connected with the base stage of audion VT2, positive pole is connected with the emitter stage of audion VT2 after resistance R7, the electric capacity C3 that negative pole is then connected with the colelctor electrode of audion VT3, P pole is connected with the colelctor electrode of audion VT4, the diode D3 that N pole is then connected with the source electrode of field effect transistor MOS, and negative pole N pole with diode D3 after inductance L1 is connected, the electric capacity C4 composition of plus earth, the colelctor electrode of described audion VT2 is connected with the colelctor electrode of audion VT1 and the negative pole of electric capacity C4 simultaneously, the base stage of described audion VT3 is connected with the negative pole of electric capacity C2, and its colelctor electrode is then connected with the drain electrode of field effect transistor MOS, and its emitter stage is then connected with the emitter stage of audion VT4, the base stage of described audion VT4 is connected with the base stage of audion VT3, and its emitter stage is then connected with the grid of field effect transistor MOS, the drain electrode of described field effect transistor MOS is then collectively forming the outfan of this illumination driving circuit and is connected with illuminating lamp with source electrode.
7. a kind of Multifucntional alcohol content tester based on detector amplifier according to claim 6, it is characterised in that: described process chip U is A718EFT integrated chip.
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| CN108376250A (en) * | 2018-02-26 | 2018-08-07 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition device and preparation method thereof, touch panel |
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| US8624979B1 (en) * | 2012-07-13 | 2014-01-07 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Monitoring apparatus for television |
| CN103837574A (en) * | 2012-11-27 | 2014-06-04 | 陕西亚泰电器科技有限公司 | Alcohol concentration tester |
| CN104881654A (en) * | 2015-05-30 | 2015-09-02 | 宁波摩米创新工场电子科技有限公司 | Pre-amplification infrared imaging image recognition system based on noise reduction |
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| CN201302568Y (en) * | 2008-12-05 | 2009-09-02 | 郑州畅想自动化设备有限公司 | Drinking detection system |
| US8624979B1 (en) * | 2012-07-13 | 2014-01-07 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Monitoring apparatus for television |
| CN103837574A (en) * | 2012-11-27 | 2014-06-04 | 陕西亚泰电器科技有限公司 | Alcohol concentration tester |
| CN104881654A (en) * | 2015-05-30 | 2015-09-02 | 宁波摩米创新工场电子科技有限公司 | Pre-amplification infrared imaging image recognition system based on noise reduction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108376250A (en) * | 2018-02-26 | 2018-08-07 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition device and preparation method thereof, touch panel |
| CN108376250B (en) * | 2018-02-26 | 2020-06-02 | 京东方科技集团股份有限公司 | Fingerprint identification device, preparation method thereof and touch panel |
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