CN103712663A - Device and method for measuring fuel oil consumption of engine - Google Patents
Device and method for measuring fuel oil consumption of engine Download PDFInfo
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- CN103712663A CN103712663A CN201310741470.9A CN201310741470A CN103712663A CN 103712663 A CN103712663 A CN 103712663A CN 201310741470 A CN201310741470 A CN 201310741470A CN 103712663 A CN103712663 A CN 103712663A
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- 239000003921 oil Substances 0.000 claims abstract description 102
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 239000010705 motor oil Substances 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 239000000446 fuel Substances 0.000 claims description 41
- 238000007493 shaping process Methods 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 12
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- 238000004891 communication Methods 0.000 claims description 6
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- 239000012530 fluid Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The invention discloses a device and method for measuring fuel oil consumption of an engine and belongs to the field of engine fuel oil detection equipment. The device is provided with an auxiliary oil tank (11). One end of an engine oil inlet pipe (5) and one end of an engine oil outlet pipe (6) are connected with the engine, and the other end of the engine oil inlet pipe (5) and the other end of the engine oil outlet pipe (6) are inserted into the auxiliary oil tank (11). A high liquid level sensor (8) is arranged on the upper portion of the auxiliary oil tank (11), a low liquid level sensor (9) is arranged on the lower portion of the auxiliary oil tank (11), and the auxiliary oil tank (11) is connected with a large engine oil tank (13) through an oil pipe (2). The measurement method includes the steps that after a system is powered on, whether the engine operates or not is judged; whether power failure exists or not is judged; whether a high oil level signal exists or not is judged; whether a low oil level signal exists or not is judged, and then corresponding control is carried out; the auxiliary oil tank is adopted for detecting and controlling oil inlet amount in real time. By means of the device and method, the oil consumption of the engine can be accurately measured, cost is low, and the problems of oil return pulsation and bubbles of the engine are effectively solved. The device and method have the advantages of being good in measurement real-time performance and the like.
Description
Technical field
Engine fuel consumption quantity measurement mechanism and a measuring method, belong to engine fuel checkout equipment field.Being specially adapted to motor fuel is liquid.
Background technology
Fuel price constantly high, and country advocates under the background of conservation-minded society, provides engine fuel consumption quantity to contribute to understand engine fuel consumption, also can provide a survey instrument for capable of saving fuel oil.Existing engine fuel consumption quantity pick-up unit mainly adopts Fuel Oil Remaining in measurement fuel tank to calculate diesel engine fuel consumption, and this mode measuring accuracy is not high and real-time is poor.Two flow sensors for existing engine fuel consumption quantity pick-up unit, are arranged on respectively on diesel motor oil-feed and fuel-displaced oil pipe, obtain the diesel-fuel consumption of diesel motor by the oil pump capacity that the oil inlet quantity of measuring deducts measurement.The shortcoming existing, with two flow sensors, cost improves greatly, and engine oil return is pulsed, and likely contains bubble, cannot accurately measure.Engine oil return flow is less, and general flow sensor cannot be measured, especially for the engine of small displacement.There is the problems such as the not high and cost of precision is higher in existing engine fuel consumption quantity measurement mechanism as can be seen here.Design a kind of can Measurement accuracy engine oil consumption, cost is low, effectively solves engine oil return pulsation and containing alveolate problem.And the good measuring method of fuel consumption real-time is extremely important.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide a kind of can Measurement accuracy engine oil consumption, cost is low, effectively solves engine fuel consumption quantity measurement mechanism and the good measuring method of real-time that engine oil return is pulsed and contained alveolate problem.
The present invention will solve the technical scheme that its technical matters adopts: this engine fuel consumption quantity measurement mechanism, comprise electric oil pump, engine oil inlet pipe and engine flowline, it is characterized in that: service tank is set, engine oil inlet pipe is connected with engine with engine flowline one end, the other end inserts in service tank, on service tank top, high liquid level sensor is set, in service tank bottom, low liquid level sensor is set, service tank is connected with engine large tank by oil pipe, the first retaining valve is installed on oil pipe, flow sensor and the second retaining valve, the second retaining valve is arranged in engine large tank and is connected with electric oil pump, controller module and flow sensor, the first retaining valve, high liquid level sensor, low liquid level sensor is connected with the second retaining valve.
Described controller comprises that battery voltage detection module, speed of a motor vehicle detection module, flow detection module, oil pump driver module, intelligent control module and clock module, speed of a motor vehicle detection module are connected with vehicle speed sensor, battery voltage detection module is connected with battery two ends, flow detection module is connected with liquid flow sensor, oil pump driver module is connected with oil pump, and speed of a motor vehicle detection module, battery voltage detection module, flow detection module, oil pump driver module, clock module are all connected with intelligent control module.
Described intelligent control module comprises microprocessor U1 and peripheral circuit, microprocessor U1 is single-chip microcomputer, 7,8 pin of microprocessor U1 are connected with the two ends of crystal oscillator X1 respectively, and by capacitor C 4, C5 ground connection, 9,11 pin of microprocessor U1 are respectively by capacitor C 6, C7 ground connection, and 10,33 pin of microprocessor U1 are ground connection respectively;
3 pin of microprocessor U1 are reset pin, receive high level signal and after a period of time, start reset signal;
7 pin of microprocessor U1 and 8 pin receive the waveform signal of crystal oscillator X1;
12 pin of microprocessor U1 and 13 pin output low level or high level signals;
18 pin of microprocessor U1 are look-at-me;
The 20 pin I of microprocessor U1
2c communication protocol communication data;
28 pin output low level or the high level signals of microprocessor U1;
35 pin of microprocessor U1 and 36 pin receive low level or high level signal;
38 pin of microprocessor U1 and 37 pin send data and 5 pin from clock signal to storage chip U2 and 6 human hair combing wastes respectively;
40 pin of microprocessor U1 send clock signal to 7 human hair combing wastes of clock chip U4, high level and low level alternating signal that 6 human hair combing wastes of the 41 pin receive clock chip U4 of microprocessor U1 send, if 5 pin of clock chip U4 send high level signal to 42 human hair combing wastes of microprocessor U1 after noting abnormalities, microprocessor U1 is resetted;
Electrification reset chip U3 forms electrification reset unit, and 3,8 pin of electrification reset chip U3 meet power supply VCC, 4 pin ground connection, and 7 pin are connected with 3 pin of microprocessor U1;
Clock chip U4 and peripheral circuit makeup time signal element;
2,3 pin of clock chip U4 and crystal oscillator X3 two ends join and pass through capacitor C 2, C3 ground connection, 1 pin of clock chip U4 and power supply VCC join and pass through capacitor C 1 ground connection, 8 pin of clock chip U4 and battery BT1 positive pole join, the negative pole of battery BT1 joins with ground, and 5,6,7 pin of clock chip U4 are connected with 42,41,40 pin of microprocessor U1;
Storage chip U2 forms storage unit; 1,2,3,7, the 4 pin ground connection of storage chip U2,8 pin of storage chip U2 meet power supply VCC, and 5,6 pin of storage chip U2 connect 38,37 pin of microprocessor U1;
Shaping chip U5, optocoupler OP1 form vehicle speed signal detecting unit, optocoupler OP1 input end joins with vehicle speed pulse signal and power supply VCC respectively, output terminal joins with 1 pin and the power supply VCC of shaping chip U5 respectively, shaping chip U5 7,14,2 respectively with power supply VCC, join with 36 pin of microprocessor U1;
Shaping chip U6 and optocoupler OP2 form flow signal detecting unit; Optocoupler OP2 input end joins with flow signal and power supply VCC respectively, and the output terminal of optocoupler OP2 joins with 1 pin and the power supply VCC of shaping chip U6 respectively, shaping chip U6 7,14,2 respectively with power supply VCC, join with 35 pin of microprocessor U1;
Optocoupler OP4 and high liquid level sensor signal form high oil level signal detecting unit; Optocoupler OP4 input end joins with high liquid level sensor signal and power supply VCC respectively, and output terminal joins with 12 pin of power supply VCC and microprocessor U1 respectively;
Optocoupler OP5 and low liquid level sensor signal form low oil level detecting signal unit, and optocoupler OP5 input end joins with low liquid level sensor signal and power supply VCC respectively, and output terminal joins with 13 pin of power supply VCC and microprocessor U1 respectively;
Operational amplifier U7 and battery voltage detection module by signal form battery voltage signal detecting unit;
The positive input terminal of operational amplifier U7 is connected with battery voltage detection module by signal by resistance R 4, and by resistance R 5 ground connection, the negative input end of operational amplifier U7 is connected with output terminal, power end is connected with power supply VCC, ground end is connected to the ground, and be connected with output terminal by diode TVS1,20 pin of the output terminal of operational amplifier U7 and microprocessor U1 join;
Operational amplifier U8 and 5V supply voltage signal form low-voltage detecting unit;
The positive input terminal of operational amplifier U8 is connected with 5V supply voltage signal by resistance R 6, and by resistance R 7 ground connection, the negative input end of operational amplifier U8 is connected with output terminal, power end is connected with power supply VCC, ground end is connected to the ground and passes through diode TVS2 and is connected with output terminal, and 18 pin of the output terminal of operational amplifier U8 and microprocessor U1 join.
A measuring method of utilizing the engine fuel consumption quantity measurement mechanism described in claim 1, is characterized in that:
A) system initialization self check, judges whether engine moves;
B) if engine does not move, store working time in this cycle, distance travelled, continues to turn back to engine and judges, if engine operation enters whether power down judgement;
C) if, store working time in this cycle, oil pump state when distance travelled and power down, if not, reads oil pump power-down state and removes;
D) judgement electric pump state, if electric pump state, for opening, is opened oil pump, detects and whether has high pressure oil level signal;
E) if electric pump state, for closing, detects whether there is low oil level signal, if the judgment is Yes, open oil pump, and continue to turn back to step d), if NO, keep oil pump state constant;
F) judge whether it is high oil level signal testing result, if so, close oil pump, enter and calculate working time, distance travelled and fuel consumption;
G) calculate average fuel consumption (L/100Km, L/H);
H) show oil consumption, then turn back to and a) enter next circulation.
The principle that the present invention measures fuel consume is:
This device is used in motor car engine, when engine is during in running status, engine is pumped from service tank, engine oil return is got back to service tank, the state of electric oil pump is saved, when the low liquid level sensor of service tank sends low oil level signal to intelligent control module, intelligent control module is switched on to electric oil pump by oil pump driver module, electric oil pump work, to service tank supply fuel oil, the fuel oil volume of supply detects by liquid oils quantity sensor, the result store of measuring is in intelligent control module, when pasta arrives the highest liquid level, the highest liquid level is sent signal to intelligent control module, intelligent control module makes electric oil pump power-off, electric oil pump quits work, the first retaining valve plays and prevents fuel flow returns, prevent the effect that fluid flow measures repeatedly.Service tank is measured more difficult problem with solving oil return, and will enter, oil return is used as an integral body and considers.During measuring, odometer sensor transmits mileage signal to intelligent control module, clock module is to intelligent control module transmitting time signal, go round and begin again, between each minimum liquid level and the highest liquid level, the fuel consumption in can measuring during this period of time, hundred kilometers of fuel consumption, fuel consumption per hour, when engine stop moves, the fuel consume total amount in the time of can measuring its last operation.
This device is used on stationary engine, and as diesel generator set, during diesel unit, principle is the same, just there is no the function of mileage signal and calculating mileage.
Compared with prior art, the beneficial effect that engine fuel consumption quantity measurement mechanism of the present invention and measuring method have is: service tank, minimum liquid level and the highest liquid level detecting sensor and control device are set, convenient by dress, cost is low, by control device, can Measurement accuracy engine oil consumption.To original system, change less.Control method is advanced, intelligent degree measurement real-time high, fuel consumption is good.Effectively solve engine oil return pulsation and contain alveolate problem.
Accompanying drawing explanation
Fig. 1 is engine fuel consumption quantity measurement mechanism structural representation.
Fig. 2 is schematic block circuit diagram.
Fig. 3 is engine fuel consumption quantity measurement mechanism program flow diagram.
Fig. 4 is circuit theory diagrams.
In Fig. 1: 1, electric oil pump 2, oil pipe 3, flow sensor 4, the first retaining valve 5, engine oil inlet pipe 6, engine flowline 7, air hole 8, high liquid level sensor 9, low liquid level sensor 10, engine 11, service tank 12, the second retaining valve 13, engine large tank.
In Fig. 2-3: the high signal Input3-of Input1-traffic pulse Batu-cell voltage Input2-oil level oil level low signal Input4-vehicle speed pulse signal.
In Fig. 4: U1 microprocessor U3 electrification reset chip U2 storage chip U3 electrification reset chip U4 clock chip U5-U6 shaping chip U7-U8 operational amplifier OP1-OP4 optocoupler X1-X3 crystal oscillator BT1 battery TVS1, TVS2 transient voltage twin zener dioder Q1 triode Q2 switching tube D1-D2 diode R1-R7 resistance C1-C7 electric capacity VCC power supply.
Embodiment
Fig. 1 ~ 4th, most preferred embodiment of the present invention, below in conjunction with accompanying drawing 1 ~ 4, the present invention will be further described.Engine fuel consumption quantity measurement mechanism is for motor car engine.
As shown in Figure 1: by electric oil pump 1, oil pipe 2, flow sensor 3, the first retaining valve 4, engine oil inlet pipe 5, engine flowline 6, air hole 7, high liquid level sensor 8, low liquid level sensor 9, engine 10, service tank 11 and retaining valve 12, formed.Fuel oil through electric oil pump 1, the second retaining valve 12, oil pipe 2, flow sensor 3, the first retaining valve 4 to service tank 11, engine oil inlet be from service tank 11 through engine oil inlet pipe 5, engine oil return is to get back to service tank 11 through engine flowline 6.
As shown in Figure 2: controller module comprises that battery voltage detection module, speed of a motor vehicle detection module, flow detection module, oil pump driver module, intelligent control module and clock module, speed of a motor vehicle detection module are connected with vehicle speed sensor, battery voltage detection module is connected with battery two ends, flow detection module is connected with liquid flow sensor, oil pump driver module is connected with oil pump, and speed of a motor vehicle detection module, battery voltage detection module, flow detection module, oil pump driver module, clock module are all connected with intelligent control module.
As shown in Figure 3:
Microprocessor U1 is μ PD78F0881A; Storage chip U2 is AT24C512, and clock chip U4 is DS1302; Operational amplifier U7 and U8 are LM358; Shaping chip U5 and U6 are Schmidt trigger CD4093; Triode Q1 is that 8550 switching tube Q2 are 8050; TVS1-TVS2 is transient voltage twin zener dioder.
Intelligent control module comprises microprocessor U1 and peripheral circuit, microprocessor U1 is single-chip microcomputer, 7,8 pin of microprocessor U1 are connected with the two ends of crystal oscillator X1 respectively, and by capacitor C 4, C5 ground connection, 9,11 pin of microprocessor U1 are respectively by capacitor C 6, C7 ground connection, and 10,33 pin of microprocessor U1 are ground connection respectively;
3 pin of microprocessor U1 are reset pin, receive high level signal and after a period of time, start reset signal;
7 pin of microprocessor U1 and 8 pin receive the waveform signal of crystal oscillator X1;
12 pin of microprocessor U1 and 13 pin output low level or high level signals;
18 pin of microprocessor U1 are look-at-me;
The 20 pin I of microprocessor U1
2c communication protocol communication data;
28 pin output low level or the high level signals of microprocessor U1;
35 pin of microprocessor U1 and 36 pin receive low level or high level signal;
38 pin of microprocessor U1 and 37 pin send data and 5 pin from clock signal to storage chip U2 and 6 human hair combing wastes respectively;
40 pin of microprocessor U1 send clock signal to 7 human hair combing wastes of clock chip U4, high level and low level alternating signal that 6 human hair combing wastes of the 41 pin receive clock chip U4 of microprocessor U1 send, if 5 pin of clock chip U4 send high level signal to 42 human hair combing wastes of microprocessor U1 after noting abnormalities, microprocessor U1 is resetted;
Electrification reset chip U3 forms electrification reset unit, and 3,8 pin of electrification reset chip U3 meet power supply VCC, 4 pin ground connection, and 7 pin are connected with 3 pin of microprocessor U1;
Clock chip U4 and peripheral circuit makeup time signal element;
2,3 pin of clock chip U4 and crystal oscillator X3 two ends join and pass through capacitor C 2, C3 ground connection, 1 pin of clock chip U4 and power supply VCC join and pass through capacitor C 1 ground connection, 8 pin of clock chip U4 and battery BT1 positive pole join, the negative pole of battery BT1 joins with ground, and 5,6,7 pin of clock chip U4 are connected with 42,41,40 pin of microprocessor U1;
Storage chip U2 forms storage unit; 1,2,3,7, the 4 pin ground connection of storage chip U2,8 pin of storage chip U2 meet power supply VCC, and 5,6 pin of storage chip U2 connect 38,37 pin of microprocessor U1;
Shaping chip U5, optocoupler OP1 form vehicle speed signal detecting unit, optocoupler OP1 input end joins with vehicle speed pulse signal and power supply VCC respectively, output terminal joins with 1 pin and the power supply VCC of shaping chip U5 respectively, shaping chip U5 7,14,2 respectively with power supply VCC, join with 36 pin of microprocessor U1;
Shaping chip U6 and optocoupler OP2 form flow signal detecting unit; Optocoupler OP2 input end joins with flow signal and power supply VCC respectively, and the output terminal of optocoupler OP2 joins with 1 pin and the power supply VCC of shaping chip U6 respectively, shaping chip U6 7,14,2 respectively with power supply VCC, join with 35 pin of microprocessor U1;
Optocoupler OP4 and high liquid level sensor signal form high oil level signal detecting unit; Optocoupler OP4 input end joins with high liquid level sensor signal and power supply VCC respectively, and output terminal joins with 12 pin of power supply VCC and microprocessor U1 respectively;
Optocoupler OP5 and low liquid level sensor signal form low oil level detecting signal unit, and optocoupler OP5 input end joins with low liquid level sensor signal and power supply VCC respectively, and output terminal joins with 13 pin of power supply VCC and microprocessor U1 respectively;
Operational amplifier U7 and battery voltage detection module by signal form battery voltage signal detecting unit;
The positive input terminal of operational amplifier U7 is connected with battery voltage detection module by signal by resistance R 4, and by resistance R 5 ground connection, the negative input end of operational amplifier U7 is connected with output terminal, power end is connected with power supply VCC, ground end is connected to the ground, and be connected with output terminal by transient voltage twin zener dioder TVS1,20 pin of the output terminal of operational amplifier U7 and microprocessor U1 join;
Operational amplifier U8 and 5V supply voltage signal form low-voltage detecting unit;
The positive input terminal of operational amplifier U8 is connected with 5V supply voltage signal by resistance R 6, and by resistance R 7 ground connection, the negative input end of operational amplifier U8 is connected with output terminal, power end is connected with power supply VCC, ground end is connected to the ground and passes through transient voltage twin zener dioder TVS2 and is connected with output terminal, and 18 pin of the output terminal of operational amplifier U8 and microprocessor U1 join.
As shown in Figure 4:
A) system initialization self check, judges whether engine moves;
B) if engine does not move, store this cycle length, distance travelled, continues to turn back to engine and judges, if engine operation enters whether power down judges;
C) if, store working time in this cycle, oil pump state when distance travelled and power down, if not, reads oil pump power-down state and removes;
D) judgement electric pump state, if electric pump state, for opening, is opened oil pump, detects and whether has high oil level signal;
E) if electric pump state, for closing, detects whether there is low oil level signal, if the judgment is Yes, open oil pump, and continue to turn back to step d), if NO, keep oil pump state constant;
F) judge whether it is high oil level signal testing result, if so, close oil pump, enter and calculate working time, distance travelled and fuel consumption;
G) calculate average fuel consumption (L/100Km, L/H);
H) show oil consumption, then turn back to and a) enter next circulation.
The course of work is as follows: at engine 10 during in running status, fuel oil arrives service tank 11 through electric oil pump 1, the second retaining valve 12, liquid flow sensor 3, engine oil inlet pipe 5 extracts fuel oil from service tank 11,6 oil returns of engine flowline are to service tank 11, when oil level arrives high liquid level sensor 8, electric oil pump 1 stops pump oil, and when oil level arrives low liquid level sensor 9, electric oil pump 1 starts pump oil.Time and mileage signal are recorded all the time.The front pump oil of each electric oil pump 1 is with next time between pump oil, the measured value of liquid flow sensor 3, and the fuel consume of correspondence in the time that the mileage being travelled during this period exactly consumes, fuel consumption is shown, and is stored.
If the volume in service tank 11 between high liquid level sensor 8 and low liquid level sensor 9 is certain, can remove liquid flow sensor 3, the fuel consumption of engine 10 still can be measured, and consumption is that the oil pumping number of times of electric oil pump 1 is multiplied by the volume between high liquid level sensor 8 and low liquid level sensor 9 in service tank 11.
When several stationary engines share a service tank 11, use a liquid flow sensor 3, the fuel consume of so several engines 10 still can calculate, and the result of calculating is several engine fuel consumption quantity sums.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (4)
1. engine fuel consumption quantity measurement mechanism, comprise electric oil pump, engine oil inlet pipe and engine flowline, it is characterized in that: service tank (11) is set, engine oil inlet pipe (5) is connected with engine (10) with engine flowline (6) one end, the other end inserts in service tank (11), on service tank (11) top, high liquid level sensor (8) is set, in service tank (11) bottom, low liquid level sensor (9) is set, service tank (11) is connected with engine large tank (13) by oil pipe (2), upper the first retaining valve (4) of installing of oil pipe (2), flow sensor (3) and the second retaining valve (12), the second retaining valve (12) is arranged in engine large tank (13) and is connected with electric oil pump (1), controller and flow sensor (3), the first retaining valve (4), high liquid level sensor (8), low liquid level sensor (9) is connected with the second retaining valve (12).
2. engine fuel consumption quantity measurement mechanism according to claim 1, it is characterized in that: described controller comprises battery voltage detection module, speed of a motor vehicle detection module, flow detection module, oil pump driver module, intelligent control module and clock module, speed of a motor vehicle detection module is connected with vehicle speed sensor, battery voltage detection module is connected with battery two ends, flow detection module is connected with liquid flow sensor, oil pump driver module is connected with oil pump, speed of a motor vehicle detection module, battery voltage detection module, flow detection module, oil pump driver module, clock module is all connected with intelligent control module.
3. engine fuel consumption quantity measurement mechanism according to claim 2, it is characterized in that: described intelligent control module comprises microprocessor U1 and peripheral circuit, microprocessor U1 is single-chip microcomputer, 7,8 pin of microprocessor U1 are connected with the two ends of crystal oscillator X1 respectively, and by capacitor C 4, C5 ground connection, 9,11 pin of microprocessor U1 are respectively by capacitor C 6, C7 ground connection, and 10,33 pin of microprocessor U1 are ground connection respectively;
3 pin of microprocessor U1 are reset pin, receive high level signal and after a period of time, start reset signal;
7 pin of microprocessor U1 and 8 pin receive the waveform signal of crystal oscillator X1;
12 pin of microprocessor U1 and 13 pin output low level or high level signals;
18 pin of microprocessor U1 are look-at-me;
The 20 pin I of microprocessor U1
2c communication protocol communication data;
28 pin output low level or the high level signals of microprocessor U1;
35 pin of microprocessor U1 and 36 pin receive low level or high level signal;
38 pin of microprocessor U1 and 37 pin send data and 5 pin from clock signal to storage chip U2 and 6 human hair combing wastes respectively;
40 pin of microprocessor U1 send clock signal to 7 human hair combing wastes of clock chip U4, high level and low level alternating signal that 6 human hair combing wastes of the 41 pin receive clock chip U4 of microprocessor U1 send, if 5 pin of clock chip U4 send high level signal to 42 human hair combing wastes of microprocessor U1 after noting abnormalities, microprocessor U1 is resetted;
Electrification reset chip U3 forms electrification reset unit, and 3,8 pin of electrification reset chip U3 meet power supply VCC, 4 pin ground connection, and 7 pin are connected with 3 pin of microprocessor U1;
Clock chip U4 and peripheral circuit makeup time signal element;
2,3 pin of clock chip U4 and crystal oscillator X3 two ends join and pass through capacitor C 2, C3 ground connection, 1 pin of clock chip U4 and power supply VCC join and pass through capacitor C 1 ground connection, 8 pin of clock chip U4 and battery BT1 positive pole join, the negative pole of battery BT1 joins with ground, and 5,6,7 pin of clock chip U4 are connected with 42,41,40 pin of microprocessor U1;
Storage chip U2 forms storage unit; 1,2,3,7, the 4 pin ground connection of storage chip U2,8 pin of storage chip U2 meet power supply VCC, and 5,6 pin of storage chip U2 connect 38,37 pin of microprocessor U1;
Shaping chip U5, optocoupler OP1 form vehicle speed signal detecting unit, optocoupler OP1 input end joins with vehicle speed pulse signal and power supply VCC respectively, output terminal joins with 1 pin and the power supply VCC of shaping chip U5 respectively, shaping chip U5 7,14,2 respectively with power supply VCC, join with 36 pin of microprocessor U1;
Shaping chip U6 and optocoupler OP2 form flow signal detecting unit; Optocoupler OP2 input end joins with flow signal and power supply VCC respectively, and the output terminal of optocoupler OP2 joins with 1 pin and the power supply VCC of shaping chip U6 respectively, shaping chip U6 7,14,2 respectively with power supply VCC, join with 35 pin of microprocessor U1;
Optocoupler OP4 and high liquid level sensor signal form high oil level signal detecting unit; Optocoupler OP4 input end joins with high liquid level sensor signal and power supply VCC respectively, and output terminal joins with 12 pin of power supply VCC and microprocessor U1 respectively;
Optocoupler OP5 and low liquid level sensor signal form low oil level detecting signal unit, and optocoupler OP5 input end joins with low liquid level sensor signal and power supply VCC respectively, and output terminal joins with 13 pin of power supply VCC and microprocessor U1 respectively;
Operational amplifier U7 and battery voltage detection module by signal form battery voltage signal detecting unit;
The positive input terminal of operational amplifier U7 is connected with battery voltage detection module by signal by resistance R 4, and by resistance R 5 ground connection, the negative input end of operational amplifier U7 is connected with output terminal, power end is connected with power supply VCC, ground end is connected to the ground, and be connected with output terminal by transient voltage twin zener dioder TVS1,20 pin of the output terminal of operational amplifier U7 and microprocessor U1 join;
Operational amplifier U8 and 5V supply voltage signal form low-voltage detecting unit;
The positive input terminal of operational amplifier U8 is connected with 5V supply voltage signal by resistance R 6, and by resistance R 7 ground connection, the negative input end of operational amplifier U8 is connected with output terminal, power end is connected with power supply VCC, ground end is connected to the ground and passes through transient voltage twin zener dioder TVS2 and is connected with output terminal, and 18 pin of the output terminal of operational amplifier U8 and microprocessor U1 join.
4. a measuring method of utilizing the arbitrary described engine fuel consumption quantity measurement mechanism of claim 1-3, is characterized in that:
A) system initialization self check, judges whether engine moves;
B) if engine does not move, store working time in this cycle, distance travelled, continues to turn back to engine and judges, if engine operation enters whether power down judgement;
C) if, store working time in this cycle, oil pump state when distance travelled and power down, if not, reads oil pump power-down state and removes;
D) judgement electric pump state, if electric pump state, for opening, is opened oil pump, detects and whether has high oil level signal;
E) if electric pump state, for closing, detects whether there is low oil level signal, if the judgment is Yes, open oil pump, and continue to turn back to step d), if NO, keep oil pump state constant;
F) judge whether it is high oil level signal testing result, if so, close oil pump, enter and calculate working time, distance travelled and fuel consumption;
G) calculate average fuel consumption (L/100Km, L/H);
H) show oil consumption, then turn back to and a) enter next circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310741470.9A CN103712663B (en) | 2013-12-30 | 2013-12-30 | Engine fuel consumption quantity measurement apparatus and measuring method |
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| CN201310741470.9A CN103712663B (en) | 2013-12-30 | 2013-12-30 | Engine fuel consumption quantity measurement apparatus and measuring method |
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| CN103712663A true CN103712663A (en) | 2014-04-09 |
| CN103712663B CN103712663B (en) | 2016-08-17 |
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| CN201310741470.9A Expired - Fee Related CN103712663B (en) | 2013-12-30 | 2013-12-30 | Engine fuel consumption quantity measurement apparatus and measuring method |
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| CN105004391A (en) * | 2015-05-25 | 2015-10-28 | 华南农业大学 | Engine oil consumption measuring device and method |
| CN107076038A (en) * | 2014-11-13 | 2017-08-18 | 伊利诺斯工具制品有限公司 | System and method for monitoring the fuel level in engine-driven electric generator |
| CN112033496A (en) * | 2020-09-10 | 2020-12-04 | 上海星融汽车科技有限公司 | Method for judging fuel quantity abnormal change based on fuel tank liquid level monitoring |
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|---|---|
| CN103712663B (en) | 2016-08-17 |
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