CN104792539A - Engine oil consumption testing system based on signal biased amplifying - Google Patents
Engine oil consumption testing system based on signal biased amplifying Download PDFInfo
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- CN104792539A CN104792539A CN201510172429.3A CN201510172429A CN104792539A CN 104792539 A CN104792539 A CN 104792539A CN 201510172429 A CN201510172429 A CN 201510172429A CN 104792539 A CN104792539 A CN 104792539A
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Abstract
The invention discloses an engine oil consumption testing system based on signal biased amplifying. The engine oil consumption testing system mainly comprises a single chip microcomputer (1), a tested power platform, a tested engine, a testing and controlling instrument (4), a power analyzer (2), an accelerator driving instrument (5), a motor controller (3) and a fuel signal collection system (6), the tested engine is arranged on the tested power platform, the testing and controlling instrument (4) and the power analyzer (2) are connected with the single chip microcomputer (1), the accelerator driving instrument (5) is connected with the testing and controlling instrument (4), the motor controller (3) is connected with the power analyzer (2), the fuel signal collection system (6) is connected with a tested engine, and the testing and controlling instrument (4) is connected with the tested engine. The engine oil consumption testing system is characterized in that a fuel signal biased amplifying system (7) is arranged between the fuel signal collection system (6) and the single chip microcomputer (1). By the engine oil consumption testing system, undistorted amplifying of collected fuel signals can be realized, and influence, on oil consumption testing, of signal distortion is avoided, so that oil consumption testing accuracy is improved.
Description
Technical field
The present invention relates to Engine Block Test field, specifically refer to a kind of engine consumption test macro being biased amplification process based on signal.
Background technology
People improve constantly the reliability of automobile, the requirement of the aspect such as security and green, and engine is as the heart component of automobile, its technical merit directly has influence on the performance index such as its dynamic property, economy and discharge, and the frequency of engine breakdown is also the highest.And engine performance test is the Main Means judging condition of the engine quality, be also the important content of automotive check and maintenance job, therefore engine performance measuring is more and more subject to people's attention.In addition, fuel consumption is the important indicator of engine evaluated economy, is one of important measurement parameter of engine.Therefore the measurement of fuel consumption is the important component part of engine performance test, and its measuring accuracy directly affects engine actual performance index, the determination of every technical parameter and the apolegamy of main accessories and adjustment etc.Engine consumption test macro operationally can carry out amplification process to fuel oil signal, but traditional engine consumption test macro can cause this fuel oil signal to occur the situation of distortion after amplifying fuel oil signal, this just have impact on the measuring accuracy of engine consumption test macro, brings very large difficulty to engine performance assessment.Therefore, providing a kind of can distortionless engine consumption test macro fuel oil signal being carried out amplify be then the current task of top priority of people to improve its oil consumption measuring accuracy.
Summary of the invention
The object of the invention is to overcome the not high defect of traditional engine consumption test system and test precision, provide a kind of and be biased the engine consumption test macro amplifying process based on signal.
Object of the present invention is achieved through the following technical solutions: a kind of engine consumption test macro being biased amplification process based on signal, mainly comprise single-chip microcomputer, tested power platform, and the tested engine be arranged on tested power platform, the measurement and control instrument be connected with single-chip microcomputer and power analyzer, the accelerator drive instrument be connected with measurement and control instrument, the electric machine controller be connected with power analyzer, and the fuel oil signal acquiring system to be connected with tested engine, this measurement and control instrument is also connected with tested engine; Between fuel oil signal acquiring system and single-chip microcomputer, be also provided with that fuel oil signal is biased amplifies disposal system; The biased disposal system of amplifying of described fuel oil signal is by bias amplifier, and the signal output apparatus be connected with bias amplifier forms.
Further, described bias amplifier is by amplifier P2, amplifier P3, triode VT5, triode VT6, unidirectional thyristor D4, negative pole is connected with the positive pole of amplifier P2 after resistance R9, positive pole is as the electric capacity C1 of circuit output end, negative pole is connected with the positive pole of amplifier P3, positive pole is then in turn through electric capacity C4 that resistance R10 is connected with the positive pole of electric capacity C1 after resistance R8, positive pole is connected with the negative pole of amplifier P2, the electric capacity C2 of ground connection while negative pole is connected with the tie point of resistance R10 with resistance R8, one end is connected with the positive pole of amplifier P2, the resistance R11 that the other end is connected with the P pole of unidirectional thyristor D4, one end is connected with the output terminal of amplifier P2, the resistance R12 of other end ground connection, positive pole is connected with the output terminal of amplifier P2, the electric capacity C3 that negative pole is connected with the base stage of triode VT5 after resistance R13, P pole is connected with the control pole of unidirectional thyristor D4, the diode D5 that N pole is then connected with the collector of triode VT5 after resistance R14, one end is connected with the output terminal of amplifier P3, the resistance R15 of other end ground connection, positive pole is connected with the output terminal of amplifier P3, the electric capacity C5 that negative pole is then connected with the base stage of triode VT6, and positive pole is connected with the emitter of triode VT6, the electric capacity C6 of minus earth forms, the N pole that is connected with the output terminal of amplifier P2, the P pole of described unidirectional thyristor D4 is then connected with signal output apparatus, the emitter of described triode VT5 is connected with the P pole of unidirectional thyristor D4, and the collector of triode VT6 is then connected with the N pole of diode D5 and signal output apparatus, the minus earth of described amplifier P3.
Described signal output apparatus is by triode VT7, field effect transistor Q, N pole is connected with the N pole of unidirectional thyristor D4, the diode D6 that P pole is then connected with the grid of field effect transistor Q after electric capacity C7, one end is connected with the N pole of diode D6, the resistance R16 that the other end is then connected with the drain electrode of field effect transistor Q, positive pole is connected with the drain electrode of field effect transistor Q, negative pole is then as the electric capacity C9 of circuit output end, one end is connected with the source electrode of field effect transistor Q, the resistance R17 that the other end is connected with the collector of triode VT7, the electric capacity C8 be in parallel with resistance R17, and one end is connected with the negative pole of electric capacity C9, the resistance R18 that the other end is connected with the collector of triode VT7 forms, the base stage of described triode VT7 is connected with the collector of triode VT6, its collector then ground connection emitter be then connected with the P pole of diode D6.
Described fuel oil signal acquiring system (6) is by flow sensor, triode VT1, triode VT2, triode VT3, triode VT4, amplifier P1, P pole is connected with the output terminal of flow sensor, the N pole then diode D1 of ground connection after resistance R1 and resistance R2 in turn, one end is connected with the P pole of diode D1, the resistance R4 that the other end is connected with the positive pole of amplifier P1, N pole is connected with the positive pole of amplifier P1, the voltage stabilizing diode D2 of P pole ground connection, P pole is connected with the positive pole of amplifier P1 after resistance R7, the diode D3 that N pole is connected with the emitter of triode VT4, and one end is connected with the base stage of triode VT2, the resistance R3 that the other end is connected with the base stage of triode VT3 after resistance R6 through resistance R5 in turn forms, the base stage of described triode VT1 is connected with the tie point of resistance R2 with resistance R1, emitter is connected with the emitter of triode VT2, collector is connected with the base stage of triode VT2, the collector of triode VT2 is connected with the tie point of resistance R6 with resistance R5, emitter is connected with the collector of triode VT3, the emitter of triode VT3 is all connected with the collector of triode VT4 with base stage, and the negative pole of amplifier P1 is connected with the collector of triode VT2, output terminal is connected with the base stage of triode VT4.
Described flow sensor is V4OEM series oil consumption flow sensor.
Described field effect transistor Q is technotron.
The resistance of described resistance R9 and resistance R10 is 10K Ω.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) collecting efficiency of fuel oil signal acquiring system of the present invention to fuel oil signal is high, is swift in response.
(2) the present invention can carry out amplification process by the distortionless fuel oil signal to collecting, and avoids, because distorted signals tests the impact brought on oil consumption, improve oil consumption measuring accuracy.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is fuel oil signal of the present invention biased amplification disposal system electrical block diagram;
Fig. 3 is fuel oil signal acquiring system electrical block diagram of the present invention.
Reference numeral name in above accompanying drawing is called:
1-single-chip microcomputer, 2-power analyzer, 3-electric machine controller, 4-measurement and control instrument, 5-accelerator drive instrument, 6-fuel oil signal acquiring system, 7-fuel oil signal is biased amplifies disposal system.
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 includes tested power platform, be fixed on the tested engine on tested power platform.In order to detect the oil consumption of tested engine, the present invention also includes single-chip microcomputer 1, the measurement and control instrument 4 be connected with single-chip microcomputer 1 and power analyzer 2, the accelerator drive instrument 5 be connected with measurement and control instrument 4, the electric machine controller 3 be connected with power analyzer 2, the fuel oil signal acquiring system 6 be connected with tested engine, and the fuel oil signal be connected with fuel oil signal acquiring system 6 is biased amplifies disposal system 7; The biased disposal system 7 of amplifying of this fuel oil signal is connected with single-chip microcomputer 1 by RS232 connection, and this measurement and control instrument 4 is also connected with tested engine.
Wherein, single-chip microcomputer 1 is as control system of the present invention, electric machine controller 3 is for controlling the start and stop of tested engine, power analyzer 2 is for detecting the output power of tested engine, accelerator drive instrument 5 for providing fuel oil for tested engine, and is shown by measurement and control instrument 4 and controls its fuel delivery amount.Fuel oil signal acquiring system 6 is for gathering the fuel flow signal of tested engine, this fuel flow signal is biased after the amplification process of amplifying disposal system 7 through fuel oil signal and flows to single-chip microcomputer 1 by RS232 connection, is calculated by single-chip microcomputer 1 and shows according to the fuel consume of fuel flow signal to tested engine.
As shown in Figure 3, described fuel oil signal acquiring system 6 is by the flow sensor be arranged on tested engine oil inlet pipe, triode VT1, triode VT2, triode VT3, triode VT4, amplifier P1, P pole is connected with the output terminal of flow sensor, the N pole then diode D1 of ground connection after resistance R1 and resistance R2 in turn, one end is connected with the P pole of diode D1, the resistance R4 that the other end is connected with the positive pole of amplifier P1, N pole is connected with the positive pole of amplifier P1, the voltage stabilizing diode D2 of P pole ground connection, P pole is connected with the positive pole of amplifier P1 after resistance R7, the diode D3 that N pole is connected with the emitter of triode VT4, and one end is connected with the base stage of triode VT2, the resistance R3 that the other end is connected with the base stage of triode VT3 after resistance R6 through resistance R5 in turn forms.The base stage of described triode VT1 is connected with the tie point of resistance R2 with resistance R1, emitter is connected with the emitter of triode VT2, collector is connected with the base stage of triode VT2, the collector of triode VT2 is connected with the tie point of resistance R6 with resistance R5, emitter is connected with the collector of triode VT3, the emitter of triode VT3 is all connected with the collector of triode VT4 with base stage, and the negative pole of amplifier P1 is connected with the collector of triode VT2, output terminal is connected with the base stage of triode VT4.The collector of described triode VT4 is then as the output terminal of circuit, and resistance R3 is then connected with 5V voltage with the tie point of resistance R5.
When starting tested engine, fuel oil then can be transported to the firing chamber of tested engine from oil inlet pipe, and at this moment flow sensor then can detect the operational throughput of fuel oil and it is changed into the output of corresponding electric signal.In order to better implement the present invention, this flow sensor is preferably the V4OEM series oil consumption flow sensor of Shanghai Ci Xi instrument and meter company limited, and its maximum error is ± 1%.
Described fuel oil signal biased amplification disposal system 7 is emphasis of the present invention, and it distortionlessly can carry out amplification process to fuel oil signal.As shown in Figure 2, it is by bias amplifier, and the signal output apparatus be connected with bias amplifier forms.
Wherein put amplifying circuit by amplifier P2, amplifier P3, triode VT5, triode VT6, unidirectional thyristor D4, negative pole is connected with the positive pole of amplifier P2 after resistance R9, positive pole is as the electric capacity C1 of circuit output end, negative pole is connected with the positive pole of amplifier P3, positive pole is then in turn through electric capacity C4 that resistance R10 is connected with the positive pole of electric capacity C1 after resistance R8, positive pole is connected with the negative pole of amplifier P2, the electric capacity C2 of ground connection while negative pole is connected with the tie point of resistance R10 with resistance R8, one end is connected with the positive pole of amplifier P2, the resistance R11 that the other end is connected with the P pole of unidirectional thyristor D4, one end is connected with the output terminal of amplifier P2, the resistance R12 of other end ground connection, positive pole is connected with the output terminal of amplifier P2, the electric capacity C3 that negative pole is connected with the base stage of triode VT5 after resistance R13, P pole is connected with the control pole of unidirectional thyristor D4, the diode D5 that N pole is then connected with the collector of triode VT5 after resistance R14, one end is connected with the output terminal of amplifier P3, the resistance R15 of other end ground connection, positive pole is connected with the output terminal of amplifier P3, the electric capacity C5 that negative pole is then connected with the base stage of triode VT6, and positive pole is connected with the emitter of triode VT6, the electric capacity C6 of minus earth forms.The N pole that is connected with the output terminal of amplifier P2, the P pole of described unidirectional thyristor D4 is then connected with signal output apparatus; The emitter of described triode VT5 is connected with the P pole of unidirectional thyristor D4, and the collector of triode VT6 is then connected with the N pole of diode D5 and signal output apparatus; The minus earth of described amplifier P3.In order to better implement the present invention, the resistance of described resistance R9 and resistance R10 is 10K Ω.
In addition, this signal output apparatus is by triode VT7, field effect transistor Q, N pole is connected with the N pole of unidirectional thyristor D4, the diode D6 that P pole is then connected with the grid of field effect transistor Q after electric capacity C7, one end is connected with the N pole of diode D6, the resistance R16 that the other end is then connected with the drain electrode of field effect transistor Q, positive pole is connected with the drain electrode of field effect transistor Q, negative pole is then as the electric capacity C9 of circuit output end, one end is connected with the source electrode of field effect transistor Q, the resistance R17 that the other end is connected with the collector of triode VT7, the electric capacity C8 be in parallel with resistance R17, and one end is connected with the negative pole of electric capacity C9, the resistance R18 that the other end is connected with the collector of triode VT7 forms.The base stage of described triode VT7 is connected with the collector of triode VT6, its collector then ground connection emitter be then connected with the P pole of diode D6.This field effect transistor Q is preferably technotron to realize.
As mentioned above, just well the present invention can be realized.
Claims (7)
1. one kind is biased the engine consumption test macro amplifying process based on signal, mainly comprise single-chip microcomputer (1), tested power platform, and the tested engine be arranged on tested power platform, the measurement and control instrument (4) be connected with single-chip microcomputer (1) and power analyzer (2), the accelerator drive instrument (5) be connected with measurement and control instrument (4), the electric machine controller (3) be connected with power analyzer (2), and the fuel oil signal acquiring system (6) to be connected with tested engine, this measurement and control instrument (4) is also connected with tested engine; It is characterized in that: between fuel oil signal acquiring system (6) and single-chip microcomputer (1), be also provided with that fuel oil signal is biased amplifies disposal system (7); The biased disposal system (7) of amplifying of described fuel oil signal is by bias amplifier, and the signal output apparatus be connected with bias amplifier forms.
2. require a kind of engine consumption test macro being biased amplification process based on signal described in 1 according to profit, it is characterized in that: described bias amplifier is by amplifier P2, amplifier P3, triode VT5, triode VT6, unidirectional thyristor D4, negative pole is connected with the positive pole of amplifier P2 after resistance R9, positive pole is as the electric capacity C1 of circuit output end, negative pole is connected with the positive pole of amplifier P3, positive pole is then in turn through electric capacity C4 that resistance R10 is connected with the positive pole of electric capacity C1 after resistance R8, positive pole is connected with the negative pole of amplifier P2, the electric capacity C2 of ground connection while negative pole is connected with the tie point of resistance R10 with resistance R8, one end is connected with the positive pole of amplifier P2, the resistance R11 that the other end is connected with the P pole of unidirectional thyristor D4, one end is connected with the output terminal of amplifier P2, the resistance R12 of other end ground connection, positive pole is connected with the output terminal of amplifier P2, the electric capacity C3 that negative pole is connected with the base stage of triode VT5 after resistance R13, P pole is connected with the control pole of unidirectional thyristor D4, the diode D5 that N pole is then connected with the collector of triode VT5 after resistance R14, one end is connected with the output terminal of amplifier P3, the resistance R15 of other end ground connection, positive pole is connected with the output terminal of amplifier P3, the electric capacity C5 that negative pole is then connected with the base stage of triode VT6, and positive pole is connected with the emitter of triode VT6, the electric capacity C6 of minus earth forms, the N pole that is connected with the output terminal of amplifier P2, the P pole of described unidirectional thyristor D4 is then connected with signal output apparatus, the emitter of described triode VT5 is connected with the P pole of unidirectional thyristor D4, and the collector of triode VT6 is then connected with the N pole of diode D5 and signal output apparatus, the minus earth of described amplifier P3.
3. require a kind of engine consumption test macro being biased amplification process based on signal described in 2 according to profit, it is characterized in that: described signal output apparatus is by triode VT7, field effect transistor Q, N pole is connected with the N pole of unidirectional thyristor D4, the diode D6 that P pole is then connected with the grid of field effect transistor Q after electric capacity C7, one end is connected with the N pole of diode D6, the resistance R16 that the other end is then connected with the drain electrode of field effect transistor Q, positive pole is connected with the drain electrode of field effect transistor Q, negative pole is then as the electric capacity C9 of circuit output end, one end is connected with the source electrode of field effect transistor Q, the resistance R17 that the other end is connected with the collector of triode VT7, the electric capacity C8 be in parallel with resistance R17, and one end is connected with the negative pole of electric capacity C9, the resistance R18 that the other end is connected with the collector of triode VT7 forms, the base stage of described triode VT7 is connected with the collector of triode VT6, its collector then ground connection emitter be then connected with the P pole of diode D6.
4. a kind of engine consumption test macro being biased amplification process based on signal according to claim 3, it is characterized in that: described fuel oil signal acquiring system (6) is by flow sensor, triode VT1, triode VT2, triode VT3, triode VT4, amplifier P1, P pole is connected with the output terminal of flow sensor, the N pole then diode D1 of ground connection after resistance R1 and resistance R2 in turn, one end is connected with the P pole of diode D1, the resistance R4 that the other end is connected with the positive pole of amplifier P1, N pole is connected with the positive pole of amplifier P1, the voltage stabilizing diode D2 of P pole ground connection, P pole is connected with the positive pole of amplifier P1 after resistance R7, the diode D3 that N pole is connected with the emitter of triode VT4, and one end is connected with the base stage of triode VT2, the resistance R3 that the other end is connected with the base stage of triode VT3 after resistance R6 through resistance R5 in turn forms, the base stage of described triode VT1 is connected with the tie point of resistance R2 with resistance R1, emitter is connected with the emitter of triode VT2, collector is connected with the base stage of triode VT2, the collector of triode VT2 is connected with the tie point of resistance R6 with resistance R5, emitter is connected with the collector of triode VT3, the emitter of triode VT3 is all connected with the collector of triode VT4 with base stage, and the negative pole of amplifier P1 is connected with the collector of triode VT2, output terminal is connected with the base stage of triode VT4.
5. a kind of engine consumption test macro being biased amplification process based on signal according to claim 4, is characterized in that: described flow sensor is V4OEM series oil consumption flow sensor.
6. a kind of engine consumption test macro being biased amplification process based on signal according to claim 3 or 4, is characterized in that: described field effect transistor Q is technotron.
7. a kind of engine consumption test macro being biased amplification process based on signal according to claim 4, is characterized in that: the resistance of described resistance R9 and resistance R10 is 10K Ω.
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| CN201510172429.3A CN104792539A (en) | 2015-04-13 | 2015-04-13 | Engine oil consumption testing system based on signal biased amplifying |
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| CN201510172429.3A CN104792539A (en) | 2015-04-13 | 2015-04-13 | Engine oil consumption testing system based on signal biased amplifying |
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| CN105333983A (en) * | 2015-11-20 | 2016-02-17 | 成都科瑞信科技有限责任公司 | Direct-current electricity power testing system based on signal bias processing |
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Application publication date: 20150722 |