CN105651981A - Demodulation amplification circuit based alcohol detector with high-definition image display - Google Patents
Demodulation amplification circuit based alcohol detector with high-definition image display Download PDFInfo
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- CN105651981A CN105651981A CN201510966818.3A CN201510966818A CN105651981A CN 105651981 A CN105651981 A CN 105651981A CN 201510966818 A CN201510966818 A CN 201510966818A CN 105651981 A CN105651981 A CN 105651981A
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Abstract
The invention discloses a demodulation amplification circuit based alcohol detector with high-definition image display. The detector is characterized by mainly comprising the following parts: a central processor; a power supply, a lighting drive circuit, a storage, a display, an alarm, a signal conditioning circuit and a demodulation amplification circuit, which are respectively connected with the central processor; a illumination lamp, which is connected to a illumination drive circuit; an alcohol detection module, which is connected with the signal conditioning circuit; a signal noise detection circuit, which is connected to the demodulation amplification circuit; and a camera, which is connected to the signal noise reduction circuit. The detector can extract the face picture information of a detected person, and brings convenience to the law enforcement of relevant law enforcement agencies. The alcohol detector is provided with the demodulation amplification circuit, which can separate the image signal and block the interference signal, and amplify the image signal, so as to avoid the interference on the resolution of signal image display.
Description
Technical field
The present invention relates to a kind of detector, specifically refer to a kind of high-definition image based on detector amplifier display alcohol content tester.
Background technology
Nowadays, traffic administration department has continually strengthened the investigation and punishment dynamics driven when intoxicated, effectively to reduce the pernicious traffic accident caused because driving when intoxicated, its in investigation process, usually adopt alcohol content tester inspection driving person's alcohol content of exhalation gas concentration and in this, as the foundation of driving person's whether drunk driving. But, existing alcohol content tester can not extract detected personnel face head portrait graphic 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 overcome the defect that traditional alcohol content tester can not extract detected personnel face head portrait graphic information in time, it is provided that a kind of high-definition image based on detector amplifier display alcohol content tester.
The object of the present invention is achieved through the following technical solutions: a kind of high-definition image based on detector amplifier display alcohol content tester, primarily of central processing unit, power supply, illumination driving circuit, holder, indicating meter, warning howler, signal conditioning circuit and the detector amplifier being connected with central processing unit respectively, the head light being connected with illumination driving circuit, the alcohol detection module being connected with signal conditioning circuit, the signal de-noising circuit being connected with detector amplifier, and the camera composition being connected with signal de-noising circuit; The control end of described camera is also connected with central processing unit.
Further, described detector amplifier is by amplifier P3, triode VT8, triode VT9, field effect transistor MOS2, positive pole is connected with the positive pole of amplifier P3, the polar capacitor C13 of negative pole ground connection, negative pole is connected with the grid of field effect transistor MOS2, positive pole then forms the polar capacitor C12 of the input terminus of this detector amplifier, positive pole is connected with the source electrode of field effect transistor MOS2, the polar capacitor C14 that negative pole is then connected with the grid of field effect transistor MOS2 after resistance R21, the potentiometer R22 being serially connected between the source electrode of field effect transistor MOS2 and the negative pole of polar capacitor C14, one end is connected with the drain electrode of field effect transistor MOS2, the resistance R23 of another termination 12V voltage, P pole is connected with the drain electrode of field effect transistor MOS2, the diode D7 that N pole is then connected with the collector electrode of triode VT8, the resistance R25 being serially connected between the base stage of triode VT8 and the negative pole of polar capacitor C14, the resistance R24 being serially connected between the negative pole of amplifier P3 and the emtting electrode of triode VT8, the resistance R26 being serially connected between the output terminal of amplifier P3 and the emtting electrode of triode VT9, and the resistance R27 being serially connected between the collector electrode of triode VT9 and the negative pole of polar capacitor C14 forms, the positive pole of described polar capacitor C14 is connected with the control end of potentiometer R22, the base stage of described triode VT9 is connected with the emtting electrode of triode VT8, and its emtting electrode then forms the output terminal of this detector amplifier and is connected with central processing unit, the input terminus of described detector amplifier then output terminal with signal de-noising circuit be connected.
Described signal conditioning circuit is by conversion chip U1, triode VT7, positive pole is connected with the OSC1 pin of conversion chip U1, the electric capacity C10 that negative pole is then connected with the OSC3 pin of conversion chip U1, with the resistance R18 that electric capacity C10 is in parallel, positive pole is connected with the IN+ pin of conversion chip U1, the electric capacity C9 that negative pole is then connected with the emtting electrode of triode VT7, N pole COM pin with conversion chip U1 after resistance R17 is connected, the diode D6 of P pole ground connection, one end is connected with the positive pole of electric capacity C9, the resistance R16 that the other end is then connected with the P pole of diode D6 after potentiometer R15, positive pole is connected with the CR+ pin of conversion chip U1, the electric capacity C11 that negative pole is then connected with the CR-pin of conversion chip U1, with the resistance R19 that electric capacity C11 is in parallel, and one end is connected with the AZ pin of conversion chip U1, the resistance R20 that the other end then forms the output terminal of this signal conditioning circuit forms, the emtting electrode of described triode VT7 is connected with the control end of potentiometer R15, and its collector electrode is then connected with the N pole of diode D6, and its base stage is then connected with REFLO pin with the IN-pin of conversion chip U1 simultaneously, described resistance R16 then forms the input terminus of this signal conditioning circuit with the tie point of potentiometer R15 and is connected with alcohol detection module, the output terminal of described signal conditioning circuit is then connected with central processing unit.
Described signal de-noising electricity routing amplifier P1, amplifier P2, triode VT5, triode VT6, field effect transistor MOS1, negative pole is connected with the base stage of triode VT5, positive pole then forms the electric capacity C5 of the input terminus of this signal de-noising circuit, positive pole negative pole with electric capacity C5 after resistance R8 is connected, 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, the resistance R10 being serially connected between the emtting electrode of triode VT5 and the positive pole of electric capacity C7, the resistance R11 being serially connected between the positive pole of electric capacity C7 and the grid of field effect transistor MOS1, the resistance R9 being serially connected between the collector electrode of triode VT5 and the negative pole of amplifier P2, the resistance R12 being serially connected between the positive pole of amplifier P2 and the emtting electrode of triode VT6, the resistance R13 being serially connected between the output terminal of amplifier P2 and the base stage of triode VT6, the inductance L 2 being serially connected between the drain electrode of field effect transistor MOS1 and the output terminal of amplifier P1, and positive pole output terminal with amplifier P1 after resistance R14 is connected, the electric capacity C8 that negative pole then forms the output terminal of this signal de-noising circuit forms, the negative pole of described amplifier P1 is connected with the collector electrode of triode VT5, its output terminal then emtting electrode with triode VT6 be connected, the grounded collector of described triode VT6, the source electrode of described field effect transistor MOS1 is connected with the positive pole of electric capacity C8.
Described illumination driving circuit is by switch circuit, and the driving circuit being connected with switch circuit forms; The input terminus of described illumination driving circuit is connected with central processing unit, and its output terminal is then connected with head light.
Described switch circuit is by process chip U, triode VT1, N pole is connected with the BOOT pin of process chip U, the diode D1 that P pole is then connected with the SW pin of process chip U after resistance R3 through resistance R1 in turn, positive pole P pole with diode D1 after resistance R2 is connected, negative pole be then connected with the GND pin of process chip U while the electric capacity C1 of ground connection, the resistance R4 being serially connected between the RON pin of process chip U and the emtting electrode 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 R1 with resistance R3 with VIN pin simultaneously, and its DIM pin then forms the input terminus 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 emtting electrode 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 emtting electrode of triode VT2 after resistance R7, negative pole is then connected with the collector electrode of triode VT3, the diode D3 that P pole is connected with the collector electrode of triode 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 L 1 is connected, the electric capacity C4 of plus earth forms; The collector electrode of described triode VT2 is connected with the negative pole of electric capacity C4 with the collector electrode of triode VT1 simultaneously; The base stage of described triode VT3 is connected with the negative pole of electric capacity C2, and its collector electrode is then connected with the drain electrode of field effect transistor MOS, its emtting electrode then emtting electrode with triode VT4 be connected; The base stage of described triode VT4 is connected with the base stage of triode VT3, and its emtting electrode 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 head light.
In order to reach better implementation result, described process chip U is A718EFT integrated chip, and described conversion chip U1 is ICL7107CPL integrated chip.
The present invention relatively prior art compare, have the following advantages and useful 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, such that it is able to make the tested personnel face information taken by the present invention more clear, tested personnel's information is confirmed so that law enfrocement official is follow-up.
(3) the present invention is provided with signal de-noising circuit, and the undesired signal being entrained in figure image signal can be suppressed by it, makes figure image signal purer, and the face image that therefore indicating meter shows is more clear.
(4) the present invention is provided with signal conditioning circuit, the signal that alcohol detection module exports can be carried out nonlinear calibration by this signal conditioning circuit, and be converted to electrical signal and be sent to central processing unit, signal fidelity after treatment is higher, therefore can improve the accuracy of detection of the present invention.
(5) the present invention is provided with detector amplifier, and it can be isolated figure image signal and undesired signal carries out resistance section, and is amplified by figure image signal, avoids interference the sharpness of signal pattern display.
Accompanying drawing explanation
Fig. 1 is the one-piece construction 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 signal conditioning circuit of the present invention.
Fig. 5 is the structural representation of the detector amplifier 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, high-definition image based on the detector amplifier display alcohol content tester of the present invention, primarily of central processing unit, power supply, illumination driving circuit, holder, indicating meter, warning howler, signal conditioning circuit and the detector amplifier being connected with central processing unit respectively, the head light being connected with illumination driving circuit, the alcohol detection module being connected with signal conditioning circuit, the signal de-noising circuit being connected with detector amplifier, and the camera composition being connected with signal de-noising circuit; The control end of described camera is also connected with central processing unit.
This alcohol detection module adopts the MQ303B type alcohol sensor of Tong Luo Science and Technology Ltd. of Shenzhen production. the signal that alcohol detection module exports can be carried out nonlinear calibration by signal conditioning circuit, and be converted to electrical signal and be sent to central processing unit, signal fidelity after treatment is higher, as shown in Figure 4, it is by conversion chip U1, triode VT7, positive pole is connected with the OSC1 pin of conversion chip U1, the electric capacity C10 that negative pole is then connected with the OSC3 pin of conversion chip U1, with the resistance R18 that electric capacity C10 is in parallel, positive pole is connected with the IN+ pin of conversion chip U1, the electric capacity C9 that negative pole is then connected with the emtting electrode of triode VT7, N pole COM pin with conversion chip U1 after resistance R17 is connected, the diode D6 of P pole ground connection, one end is connected with the positive pole of electric capacity C9, the resistance R16 that the other end is then connected with the P pole of diode D6 after potentiometer R15, positive pole is connected with the CR+ pin of conversion chip U1, the electric capacity C11 that negative pole is then connected with the CR-pin of conversion chip U1, with the resistance R19 that electric capacity C11 is in parallel, and one end is connected with the AZ pin of conversion chip U1, the resistance R20 that the other end then forms the output terminal of this signal conditioning circuit forms.
Meanwhile, the emtting electrode of described triode VT7 is connected with the control end of potentiometer R15, and its collector electrode is then connected with the N pole of diode D6, and its base stage is then connected with REFLO pin with the IN-pin of conversion chip U1 simultaneously. Described resistance R16 then forms the input terminus of this signal conditioning circuit with the tie point of potentiometer R15 and is connected with alcohol detection module. The output terminal of described signal conditioning circuit is then connected with central processing unit.
Wherein, this triode VT7, electric capacity C9, diode D6, resistance R16 and potentiometer R15 form a nonlinear calibration circuit, and the signal of input fidelity of reproduction after this nonlinear calibration processing of circuit is higher. Signal after nonlinear calibration processing of circuit is converted to electrical signal by conversion chip U1 and is exported to central processing unit again. In order to reach better implementation result, described conversion chip U1 is preferably ICL7107CPL integrated chip.
The undesired signal being entrained in figure image signal can be suppressed by signal de-noising circuit, makes figure image signal purer, its structure as shown in Figure 3, by amplifier P1, amplifier P2, triode VT5, triode 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 L 2 and diode D5 form.
During connection, the negative pole of electric capacity C5 is connected with the base stage of triode VT5, its positive pole then forms this signal de-noising circuit input terminus is also connected with the signal output terminal of camera. 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 then positive pole with amplifier P1 be connected. Resistance R10 is serially connected between the emtting electrode of triode VT5 and the positive pole of electric capacity C7. Between the positive pole that resistance R11 is serially connected in electric capacity C7 and the grid of field effect transistor MOS1. Resistance R9 is serially connected between the collector electrode of triode VT5 and the negative pole of amplifier P2. Resistance R12 is serially connected between the positive pole of amplifier P2 and the emtting electrode of triode VT6. Resistance R13 is serially connected between the output terminal of amplifier P2 and the base stage of triode VT6. Inductance L 2 is serially connected between the drain electrode of field effect transistor MOS1 and the output terminal of amplifier P1. The positive pole of electric capacity C8 is connected with the output terminal of amplifier P1 after resistance R14, its negative pole then forms this signal de-noising circuit output terminal is also connected with the input terminus of detector amplifier. The negative pole of described amplifier P1 is connected with the collector electrode of triode VT5, its output terminal then emtting electrode with triode VT6 be connected. The grounded collector of described triode VT6. The source electrode of described field effect transistor MOS1 is connected with the positive pole of electric capacity C8.
After signal is input to signal de-noising circuit, by signal de-noising circuit, to adulterating, undesired signal in the signal suppresses. This amplifier P2, resistance R13 and triode VT6 form compensating circuit, and it can the loss that occurs in treating processes of compensating signal.
Detector amplifier can be isolated figure image signal and undesired signal carries out resistance section, and is amplified by figure image signal, avoids interference the sharpness of signal pattern display, as shown in Figure 5, it is by amplifier P3, triode VT8 for its structure, triode VT9, field effect transistor MOS2, resistance R21, potentiometer R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27, diode D7, polar capacitor C12, polar capacitor C13 and polar capacitor C14 form.
During connection, the positive pole of polar capacitor C13 is connected with the positive pole of amplifier P3, its negative pole ground connection. The negative pole of polar capacitor C12 is connected with the grid of field effect transistor MOS2, its positive pole then forms this detector amplifier input terminus output terminal with signal de-noising circuit are connected. The positive pole of polar capacitor C14 is connected with the source electrode of field effect transistor MOS2, its negative pole then after resistance R21 grid with field effect transistor MOS2 be connected. Between the source electrode being serially connected in field effect transistor MOS2 of potentiometer R22 and the negative pole of polar capacitor C14. One end of resistance R23 is connected with the drain electrode of field effect transistor MOS2, its another termination 12V voltage. The P pole of diode D7 is connected with the drain electrode of field effect transistor MOS2, its N pole then collector electrode with triode VT8 be connected. Resistance R25 is serially connected between the base stage of triode VT8 and the negative pole of polar capacitor C14. Resistance R24 is serially connected between the negative pole of amplifier P3 and the emtting electrode of triode VT8. Resistance R26 is serially connected between the output terminal of amplifier P3 and the emtting electrode of triode VT9. Resistance R27 is serially connected between the collector electrode of triode VT9 and the negative pole of polar capacitor C14.
Meanwhile, the positive pole of described polar capacitor C14 is connected with the control end of potentiometer R22. The base stage of described triode VT9 is connected with the emtting electrode of triode VT8, and its emtting electrode then forms the output terminal of this detector amplifier and is connected with central processing unit.
Signal forms detection circuit by field effect transistor MOS2, potentiometer R22, resistance R21 and polar capacitor C14 after being input to detector amplifier, and this detection circuit can isolate figure image signal and the section of resistance undesired signal. The figure image signal separated is carried to central processing unit after amplifying via the amplification circuit of composition described in amplifier P3, triode VT8 and triode VT9 again.
Central processing unit is then the control center of the present invention, and it preferentially adopts TA89C2051 type micro-chip to realize. The VCC pin of this TA89C2051 type micro-chip connects power supply, its XTAL1 pin then connects the output terminal of signal conditioning circuit, its XTAL2 pin then connects the output terminal of detector amplifier, its RST pin then connects the control end of camera, P3.2 pin device taking alarm, its P3.3 pin then connects indicating meter, and P3.4 pin connects holder, and its P3.5 pin then connects the input terminus of illumination driving circuit. This power supply is used for providing working power to central processing unit, camera is for gathering face's information of detected personnel, indicating meter is for the face image of the ethanol concn value and detected personnel that show detected personnel, and holder is then for storing detected personnel's face image information and its ethanol concn value. This illumination driving circuit is then for driving head light to work.
As shown in Figure 2, this illumination driving circuit is by switch circuit, and the driving circuit being connected with switch circuit forms. The input terminus of described illumination driving circuit is connected with central processing unit, and its output terminal is then connected with head light.
Wherein, described switch circuit is made up of process chip U, triode VT1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electric capacity C1, electric capacity C2, diode D1 and diode D2.
During connection, the N pole of diode D1 is connected with the BOOT pin of process chip U, its P pole is then connected through resistance R1 SW pin with process chip U after resistance R3 in turn. 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 of process chip U. Resistance R4 is serially connected between the RON pin of process chip U and the emtting electrode 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 R1 with resistance R3 with VIN pin simultaneously, and its DIM pin then forms the input terminus of this illumination driving circuit and the P3.5 pin with TA89C2051 type micro-chip is connected.
Described driving circuit is made up of triode VT2, triode VT3, triode VT4, field effect transistor MOS, resistance R6, resistance R7, electric capacity C3, inductance L 1, diode D3 and electric capacity C4.
Wherein, one end of resistance R6 be connected with the emtting electrode of triode VT1, its other end then base stage with triode VT2 be connected. The positive pole of electric capacity C3 is connected with the emtting electrode of triode VT2 after resistance R7, its negative pole then collector electrode with triode VT3 be connected. The P pole of diode D3 is connected with the collector electrode 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 N pole with diode D3 after inductance L 1 is connected, its plus earth.
The collector electrode of this triode VT2 is connected with the negative pole of electric capacity C4 with the collector electrode of triode VT1 simultaneously. The base stage of described triode VT3 is connected with the negative pole of electric capacity C2, and its collector electrode is then connected with the drain electrode of field effect transistor MOS, its emtting electrode then emtting electrode with triode VT4 be connected. The base stage of described triode VT4 is connected with the base stage of triode VT3, and its emtting electrode 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 head light.
After central processing unit has signal 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 the buffering drive circuit being made up of triode VT2, triode VT3, triode VT4 and field effect transistor MOS is worked, this buffering drive circuit is then linear to be driven head light, makes the work that head light is stable. In order to reach better implementation result, described process chip U is preferably A718EFT integrated chip and realizes.
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 ethanol concn to signal conditioning circuit, signal is sent to central processing unit after signal conditioning circuit processes, the signal that central authorities process essence detection module output of filling a wine cup for is converted to ethanol concn signal and is sent to warning howler and indicating meter respectively, and warning howler is sounded the alarm, and indicating meter then demonstrates ethanol concn value. Simultaneously, central processing unit also sends instruction signal to illumination driving circuit and camera, illumination driving circuit is made to drive illumination lamp ignition, camera then takes detected personnel's face image signal send to signal de-noising circuit, signal de-noising circuit is sent to detector amplifier after being processed by signal, detector amplifier is sent to central processing unit after being processed by signal, and central processing unit is then sent to holder signal and stores. Make the image definition photographed higher by the irradiation of head light.
As mentioned above, it is necessary, just can well realize the present invention.
Claims (8)
1. the display alcohol content tester of the high-definition image based on detector amplifier, it is characterized in that, primarily of central processing unit, power supply, illumination driving circuit, holder, indicating meter, warning howler, signal conditioning circuit and the detector amplifier being connected with central processing unit respectively, the head light being connected with illumination driving circuit, the alcohol detection module being connected with signal conditioning circuit, the signal de-noising circuit being connected with detector amplifier, and the camera composition being connected with signal de-noising circuit; The control end of described camera is also connected with central processing unit.
2. a kind of high-definition image based on detector amplifier according to claim 1 display alcohol content tester, it is characterized in that: described detector amplifier is by amplifier P3, triode VT8, triode VT9, field effect transistor MOS2, positive pole is connected with the positive pole of amplifier P3, the polar capacitor C13 of negative pole ground connection, negative pole is connected with the grid of field effect transistor MOS2, positive pole then forms the polar capacitor C12 of the input terminus of this detector amplifier, positive pole is connected with the source electrode of field effect transistor MOS2, the polar capacitor C14 that negative pole is then connected with the grid of field effect transistor MOS2 after resistance R21, the potentiometer R22 being serially connected between the source electrode of field effect transistor MOS2 and the negative pole of polar capacitor C14, one end is connected with the drain electrode of field effect transistor MOS2, the resistance R23 of another termination 12V voltage, P pole is connected with the drain electrode of field effect transistor MOS2, the diode D7 that N pole is then connected with the collector electrode of triode VT8, the resistance R25 being serially connected between the base stage of triode VT8 and the negative pole of polar capacitor C14, the resistance R24 being serially connected between the negative pole of amplifier P3 and the emtting electrode of triode VT8, the resistance R26 being serially connected between the output terminal of amplifier P3 and the emtting electrode of triode VT9, and the resistance R27 being serially connected between the collector electrode of triode VT9 and the negative pole of polar capacitor C14 forms, the positive pole of described polar capacitor C14 is connected with the control end of potentiometer R22, the base stage of described triode VT9 is connected with the emtting electrode of triode VT8, and its emtting electrode then forms the output terminal of this detector amplifier and is connected with central processing unit, the input terminus of described detector amplifier then output terminal with signal de-noising circuit be connected.
3. a kind of high-definition image based on detector amplifier according to claim 2 display alcohol content tester, it is characterized in that: described signal conditioning circuit is by conversion chip U1, triode VT7, positive pole is connected with the OSC1 pin of conversion chip U1, the electric capacity C10 that negative pole is then connected with the OSC3 pin of conversion chip U1, with the resistance R18 that electric capacity C10 is in parallel, positive pole is connected with the IN+ pin of conversion chip U1, the electric capacity C9 that negative pole is then connected with the emtting electrode of triode VT7, N pole COM pin with conversion chip U1 after resistance R17 is connected, the diode D6 of P pole ground connection, one end is connected with the positive pole of electric capacity C9, the resistance R16 that the other end is then connected with the P pole of diode D6 after potentiometer R15, positive pole is connected with the CR+ pin of conversion chip U1, the electric capacity C11 that negative pole is then connected with the CR-pin of conversion chip U1, with the resistance R19 that electric capacity C11 is in parallel, and one end is connected with the AZ pin of conversion chip U1, the resistance R20 that the other end then forms the output terminal of this signal conditioning circuit forms, the emtting electrode of described triode VT7 is connected with the control end of potentiometer R15, and its collector electrode is then connected with the N pole of diode D6, and its base stage is then connected with REFLO pin with the IN-pin of conversion chip U1 simultaneously, described resistance R16 then forms the input terminus of this signal conditioning circuit with the tie point of potentiometer R15 and is connected with alcohol detection module, the output terminal of described signal conditioning circuit is then connected with central processing unit.
4. a kind of high-definition image based on detector amplifier according to claim 3 display alcohol content tester, it is characterized in that: described signal de-noising electricity routing amplifier P1, amplifier P2, triode VT5, triode VT6, field effect transistor MOS1, negative pole is connected with the base stage of triode VT5, positive pole then forms the electric capacity C5 of the input terminus of this signal de-noising circuit, positive pole negative pole with electric capacity C5 after resistance R8 is connected, 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, the resistance R10 being serially connected between the emtting electrode of triode VT5 and the positive pole of electric capacity C7, the resistance R11 being serially connected between the positive pole of electric capacity C7 and the grid of field effect transistor MOS1, the resistance R9 being serially connected between the collector electrode of triode VT5 and the negative pole of amplifier P2, the resistance R12 being serially connected between the positive pole of amplifier P2 and the emtting electrode of triode VT6, the resistance R13 being serially connected between the output terminal of amplifier P2 and the base stage of triode VT6, the inductance L 2 being serially connected between the drain electrode of field effect transistor MOS1 and the output terminal of amplifier P1, and positive pole output terminal with amplifier P1 after resistance R14 is connected, the electric capacity C8 that negative pole then forms the output terminal of this signal de-noising circuit forms, the negative pole of described amplifier P1 is connected with the collector electrode of triode VT5, its output terminal then emtting electrode with triode VT6 be connected, the grounded collector of described triode VT6, the source electrode of described field effect transistor MOS1 is connected with the positive pole of electric capacity C8.
5. a kind of high-definition image based on detector amplifier according to claim 4 display alcohol content tester, it is characterised in that: described illumination driving circuit is by switch circuit, and the driving circuit being connected with switch circuit forms; The input terminus of described illumination driving circuit is connected with central processing unit, and its output terminal is then connected with head light.
6. a kind of high-definition image based on detector amplifier according to claim 5 display alcohol content tester, it is characterized in that: described switch circuit is by process chip U, triode VT1, N pole is connected with the BOOT pin of process chip U, the diode D1 that P pole is then connected with the SW pin of process chip U after resistance R3 through resistance R1 in turn, positive pole P pole with diode D1 after resistance R2 is connected, negative pole be then connected with the GND pin of process chip U while the electric capacity C1 of ground connection, the resistance R4 being serially connected between the RON pin of process chip U and the emtting electrode 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 R1 with resistance R3 with VIN pin simultaneously, and its DIM pin then forms the input terminus of this illumination driving circuit and is connected with central processing unit.
7. a kind of high-definition image based on detector amplifier according to claim 6 display alcohol content tester, 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 emtting electrode of triode VT1, the resistance R6 that the other end is then connected with the base stage of triode VT2, positive pole emtting electrode with triode VT2 after resistance R7 is connected, the electric capacity C3 that negative pole is then connected with the collector electrode of triode VT3, P pole is connected with the collector electrode of triode 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 L 1 is connected, the electric capacity C4 of plus earth forms, the collector electrode of described triode VT2 is connected with the negative pole of electric capacity C4 with the collector electrode of triode VT1 simultaneously, the base stage of described triode VT3 is connected with the negative pole of electric capacity C2, and its collector electrode is then connected with the drain electrode of field effect transistor MOS, its emtting electrode then emtting electrode with triode VT4 be connected, the base stage of described triode VT4 is connected with the base stage of triode VT3, and its emtting electrode 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 head light.
8. a kind of high-definition image based on detector amplifier according to claim 7 display alcohol content tester, it is characterised in that: described process chip U is A718EFT integrated chip, and described conversion chip U1 is ICL7107CPL integrated chip.
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| CN1381721A (en) * | 2002-06-04 | 2002-11-27 | 复旦大学 | Portable intelligent electronic nose and its preparing process |
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Application publication date: 20160608 |