CN104807514A - Two-stage low-pass filter and amplification type engine fuel consumption testing system - Google Patents
Two-stage low-pass filter and amplification type engine fuel consumption testing system Download PDFInfo
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- CN104807514A CN104807514A CN201510172230.0A CN201510172230A CN104807514A CN 104807514 A CN104807514 A CN 104807514A CN 201510172230 A CN201510172230 A CN 201510172230A CN 104807514 A CN104807514 A CN 104807514A
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Abstract
The invention discloses a two-stage low-pass filter and amplification type engine fuel consumption testing system. The system comprises a tested power platform and a tested engine arranged on the tested power platform and is characterized by further comprising a microcomputer (1), a measuring and control instrument (4), a power analyzer (2), a throttle drive instrument (5), a motor controller (3), a fuel signal acquisition system (6) and a two-stage low-pass filter and amplification treatment system (7), wherein the measuring and control instrument (4) and the power analyzer (2) are connected with the microcomputer (1); the throttle drive instrument (5) is connected with the measuring and control instrument (4); the motor controller (3) is connected with the power analyzer (2); the fuel signal acquisition system (6) is connected with the tested engine; the two-stage low-pass filter and amplification treatment system (7) is connected with the fuel signal acquisition system (6) and is further connected with the microcomputer (1); the measuring and control instrument (4) is further connected with the tested engine. The two-stage low-pass filter and amplification treatment system is capable of treating acquired signals; after treatment, fidelity of signals is higher, thus precision of the fuel consumption testing system is improved.
Description
Technical field
The present invention relates to Engine Block Test field, specifically refer to that a kind of two-stage low-pass filtering amplifying type engine fuel consumes test macro.
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, every technical parameter is determined and the apolegamy of main accessories and adjustment etc.But the measuring accuracy of traditional engine fuel test macro is not high, this just brings very large difficulty to engine performance assessment.Therefore, a kind of high-precision engine fuel test macro is provided to be then the current task of top priority of people.
Summary of the invention
The object of the invention is to overcome the defect that the measuring accuracy of traditional engine consumption test macro is not high, provide a kind of two-stage low-pass filtering amplifying type engine fuel to consume test macro.
Object of the present invention is achieved through the following technical solutions: a kind of two-stage low-pass filtering amplifying type engine fuel consumes test macro, mainly comprise tested power platform, and the tested engine be arranged on tested power platform, also include single-chip microcomputer, 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, the fuel oil signal acquiring system be connected with tested engine, and the two-stage low-pass filtering be connected with fuel oil signal acquiring system amplifies disposal system; This two-stage low-pass filtering is amplified disposal system and is also connected with single-chip microcomputer, and measurement and control instrument is also connected with tested engine; Described two-stage low-pass filtering amplifies disposal system by two-stage low-pass filtering amplifying circuit, and the output circuit be connected with two-stage low-pass filtering amplifying circuit forms.
Further, described two-stage low-pass filtering amplifying circuit is by amplifier P2, amplifier P3, triode VT5, triode VT6, triode VT7, bidirectional thyristor D4, negative pole is connected with the positive pole of amplifier P2, positive pole after resistance R8 as the electric capacity C1 of circuit input end, one end is connected with the collector of triode VT5, the resistance R9 of other end ground connection after resistance R10, P pole is connected with the control pole of bidirectional thyristor D4, the diode D5 that N pole is connected with the base stage of triode VT6 after electric capacity C2, positive pole is connected with the emitter of triode VT6, the electric capacity C3 of minus earth, P pole is connected with the emitter of triode VT6, the voltage stabilizing diode D6 that N pole is connected with the base stage of triode VT7, one end is connected with the collector of triode VT7, the resistance R11 that the other end is connected with the output terminal of amplifier P3, negative pole is connected with the emitter of triode VT7, the electric capacity C5 that positive pole is connected with the output terminal of amplifier P3, and one end is connected with the positive pole of amplifier P3, the electric capacity C4 that the other end is connected with the output terminal of amplifier P3 forms, the base stage of described triode VT5 is connected with the tie point of electric capacity C1 with resistance R8, emitter is connected with the first anode of bidirectional thyristor D4, the second anode of bidirectional thyristor D4 is connected with the collector of triode VT6, minus earth, the output terminal of amplifier P2 are connected with the tie point of resistance R10 and the N pole of diode D5 with resistance R9 simultaneously, and the negative pole of amplifier P3 is connected with the collector of triode VT6, output terminal is connected with output circuit.
Described output circuit comprises process chip U, diode D7, diode D8, electric capacity C6, field effect transistor Q; The P pole of described diode D7 is connected with the output terminal of amplifier P3, N pole is connected with the VCC pin of process chip U, the N pole of diode D8 is with the LOG pin of process chip U and I/O pin is connected, P pole ground connection, the positive pole of electric capacity C6 is connected with the KA pin of process chip U, negative pole is connected with the P pole of diode D8, and the grid of field effect transistor Q is connected with the HOG pin of process chip U, grounded drain, source electrode are connected with the VS pin of process chip U; The IS pin of described process chip U and DT pin are all simultaneously with the P pole of diode D7 and the output terminal of amplifier P3 is connected, GND pin ground connection.
Described fuel oil signal acquiring system 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 process chip U is PM2020A integrated circuit, and flow sensor is V4OEM series oil consumption flow sensor, and field effect transistor Q is technotron.
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) two-stage low-pass filtering of the present invention amplifies disposal system, and can process gathering the signal come, the signal fidelity after process is higher, thus can improve the degree of accuracy of fuel consume test macro.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is that two-stage low-pass filtering of the present invention amplifies 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-two-stage low-pass filtering 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 two-stage low-pass filtering be connected with fuel oil signal acquiring system 6 amplifies disposal system 7; This two-stage low-pass filtering is amplified disposal system 7 and 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 flows to single-chip microcomputer 1 by RS232 connection after the process that two-stage low-pass filtering amplifies disposal system 7, 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.
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%.
It is emphasis of the present invention that described two-stage low-pass filtering amplifies disposal system 7, and as shown in Figure 2, it is by two-stage low-pass filtering amplifying circuit, and the output circuit be connected with two-stage low-pass filtering amplifying circuit forms.
Two-stage low-pass filtering amplifying circuit is wherein by amplifier P2, amplifier P3, triode VT5, triode VT6, triode VT7, bidirectional thyristor D4, negative pole is connected with the positive pole of amplifier P2, positive pole after resistance R8 as the electric capacity C1 of circuit input end, one end is connected with the collector of triode VT5, the resistance R9 of other end ground connection after resistance R10, P pole is connected with the control pole of bidirectional thyristor D4, the diode D5 that N pole is connected with the base stage of triode VT6 after electric capacity C2, positive pole is connected with the emitter of triode VT6, the electric capacity C3 of minus earth, P pole is connected with the emitter of triode VT6, the voltage stabilizing diode D6 that N pole is connected with the base stage of triode VT7, one end is connected with the collector of triode VT7, the resistance R11 that the other end is connected with the output terminal of amplifier P3, negative pole is connected with the emitter of triode VT7, the electric capacity C5 that positive pole is connected with the output terminal of amplifier P3, and one end is connected with the positive pole of amplifier P3, the electric capacity C4 that the other end is connected with the output terminal of amplifier P3 forms.The base stage of described triode VT5 is connected with the tie point of electric capacity C1 with resistance R8, emitter is connected with the first anode of bidirectional thyristor D4, the second anode of bidirectional thyristor D4 is connected with the collector of triode VT6, minus earth, the output terminal of amplifier P2 are connected with the tie point of resistance R10 and the N pole of diode D5 with resistance R9 simultaneously, and the negative pole of amplifier P3 is connected with the collector of triode VT6, output terminal is connected with output circuit.
Described output circuit comprises process chip U, diode D7, diode D8, electric capacity C6, field effect transistor Q; The P pole of described diode D7 is connected with the output terminal of amplifier P3, N pole is connected with the VCC pin of process chip U, the N pole of diode D8 is with the LOG pin of process chip U and I/O pin is connected, P pole ground connection, the positive pole of electric capacity C6 is connected with the KA pin of process chip U, negative pole is connected with the P pole of diode D8, and the grid of field effect transistor Q is connected with the HOG pin of process chip U, grounded drain, source electrode are connected with the VS pin of process chip U; The IS pin of described process chip U and DT pin are all simultaneously with the P pole of diode D7 and the output terminal of amplifier P3 is connected, GND pin ground connection, and VS pin is then as the output terminal of circuit, and this output terminal is connected with single-chip microcomputer 1.This process chip U is preferably PM2020A integrated circuit, and field effect transistor Q is then technotron.
As mentioned above, just well the present invention can be realized.
Claims (7)
1. a two-stage low-pass filtering amplifying type engine fuel consumes test macro, mainly comprise tested power platform, and the tested engine be arranged on tested power platform, it is characterized in that: also include 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 two-stage low-pass filtering to be connected with fuel oil signal acquiring system (6) amplifies disposal system (7), this two-stage low-pass filtering is amplified disposal system (7) and is also connected with single-chip microcomputer (1), and measurement and control instrument (4) is also connected with tested engine, described two-stage low-pass filtering amplifies disposal system (7) by two-stage low-pass filtering amplifying circuit, and the output circuit be connected with two-stage low-pass filtering amplifying circuit forms.
2. a kind of two-stage low-pass filtering amplifying type engine fuel according to claim 1 consumes test macro, it is characterized in that: described two-stage low-pass filtering amplifying circuit is by amplifier P2, amplifier P3, triode VT5, triode VT6, triode VT7, bidirectional thyristor D4, negative pole is connected with the positive pole of amplifier P2, positive pole after resistance R8 as the electric capacity C1 of circuit input end, one end is connected with the collector of triode VT5, the resistance R9 of other end ground connection after resistance R10, P pole is connected with the control pole of bidirectional thyristor D4, the diode D5 that N pole is connected with the base stage of triode VT6 after electric capacity C2, positive pole is connected with the emitter of triode VT6, the electric capacity C3 of minus earth, P pole is connected with the emitter of triode VT6, the voltage stabilizing diode D6 that N pole is connected with the base stage of triode VT7, one end is connected with the collector of triode VT7, the resistance R11 that the other end is connected with the output terminal of amplifier P3, negative pole is connected with the emitter of triode VT7, the electric capacity C5 that positive pole is connected with the output terminal of amplifier P3, and one end is connected with the positive pole of amplifier P3, the electric capacity C4 that the other end is connected with the output terminal of amplifier P3 forms, the base stage of described triode VT5 is connected with the tie point of electric capacity C1 with resistance R8, emitter is connected with the first anode of bidirectional thyristor D4, the second anode of bidirectional thyristor D4 is connected with the collector of triode VT6, minus earth, the output terminal of amplifier P2 are connected with the tie point of resistance R10 and the N pole of diode D5 with resistance R9 simultaneously, and the negative pole of amplifier P3 is connected with the collector of triode VT6, output terminal is connected with output circuit.
3. a kind of two-stage low-pass filtering amplifying type engine fuel according to claim 2 consumes test macro, it is characterized in that: described output circuit comprises process chip U, diode D7, diode D8, electric capacity C6, field effect transistor Q; The P pole of described diode D7 is connected with the output terminal of amplifier P3, N pole is connected with the VCC pin of process chip U, the N pole of diode D8 is with the LOG pin of process chip U and I/O pin is connected, P pole ground connection, the positive pole of electric capacity C6 is connected with the KA pin of process chip U, negative pole is connected with the P pole of diode D8, and the grid of field effect transistor Q is connected with the HOG pin of process chip U, grounded drain, source electrode are connected with the VS pin of process chip U; The IS pin of described process chip U and DT pin are all simultaneously with the P pole of diode D7 and the output terminal of amplifier P3 is connected, GND pin ground connection.
4. a kind of two-stage low-pass filtering amplifying type engine fuel according to claim 3 consumes test macro, 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 two-stage low-pass filtering amplifying type engine fuel according to claim 3 or 4 consumes test macro, it is characterized in that: described process chip U is PM2020A integrated circuit.
6. a kind of two-stage low-pass filtering amplifying type engine fuel according to claim 4 consumes test macro, it is characterized in that: described flow sensor is V4OEM series oil consumption flow sensor.
7. a kind of two-stage low-pass filtering amplifying type engine fuel according to claim 3 or 4 consumes test macro, it is characterized in that: described field effect transistor Q is technotron.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510172230.0A CN104807514A (en) | 2015-04-13 | 2015-04-13 | Two-stage low-pass filter and amplification type engine fuel consumption testing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510172230.0A CN104807514A (en) | 2015-04-13 | 2015-04-13 | Two-stage low-pass filter and amplification type engine fuel consumption testing system |
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| CN104807514A true CN104807514A (en) | 2015-07-29 |
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| US3720934A (en) * | 1969-06-06 | 1973-03-13 | Berliet Automobiles | Pick-up devices for detecting the passage of a movable member of a scale assembly of an apparatus for accurately measuring the specific consumption of internal combustion engine |
| CN2581947Y (en) * | 2002-12-31 | 2003-10-22 | 朱金良 | Oil consumption recording analyzer for diesel locomotive |
| CN201130097Y (en) * | 2007-12-10 | 2008-10-08 | 广西玉柴机器股份有限公司 | Removable engine test desk rack |
| CN104410942A (en) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | Phase shift type audio processing system by low-pass filtering and amplification |
| CN104410301A (en) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | High-power trigger booster circuit based on phase shifting |
| CN104469613A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | Low-pass filtering and amplifying audio processing system based on linear driving |
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2015
- 2015-04-13 CN CN201510172230.0A patent/CN104807514A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3720934A (en) * | 1969-06-06 | 1973-03-13 | Berliet Automobiles | Pick-up devices for detecting the passage of a movable member of a scale assembly of an apparatus for accurately measuring the specific consumption of internal combustion engine |
| CN2581947Y (en) * | 2002-12-31 | 2003-10-22 | 朱金良 | Oil consumption recording analyzer for diesel locomotive |
| CN201130097Y (en) * | 2007-12-10 | 2008-10-08 | 广西玉柴机器股份有限公司 | Removable engine test desk rack |
| CN104410942A (en) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | Phase shift type audio processing system by low-pass filtering and amplification |
| CN104410301A (en) * | 2014-11-26 | 2015-03-11 | 成都创图科技有限公司 | High-power trigger booster circuit based on phase shifting |
| CN104469613A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | Low-pass filtering and amplifying audio processing system based on linear driving |
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Application publication date: 20150729 |