CN201876982U - Automotive fuel quantity voice prompt and fuel pump protection device based on single chip - Google Patents
Automotive fuel quantity voice prompt and fuel pump protection device based on single chip Download PDFInfo
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- CN201876982U CN201876982U CN2010206552065U CN201020655206U CN201876982U CN 201876982 U CN201876982 U CN 201876982U CN 2010206552065 U CN2010206552065 U CN 2010206552065U CN 201020655206 U CN201020655206 U CN 201020655206U CN 201876982 U CN201876982 U CN 201876982U
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- fuel
- fuel pump
- voice prompt
- voice suggestion
- pump protection
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Abstract
The utility model discloses an automotive fuel quantity voice prompt and fuel pump protection device based on a single chip, which comprises an automotive ignition switch, an instrument panel and an oil level sensor mounted in the instrument panel. The automotive fuel quantity voice prompt and fuel pump protection device also comprises a digital to analog converter, an address latch, an information processing unit and a voice prompt and fuel pump protection unit which are connected in sequence, wherein the voice prompt and fuel pump protection unit consists of a voice prompt device and an oil pump protection relay; the information processing unit, the digital to analog converter, the address latch and the voice prompt device are directly mounted on the instrument panel; the oil pump protection relay is mounted in a fuse box of an engine; and after being depressurized, a storage battery is used for supplying power for the digital to analog converter, the address latch, the information processing unit and the voice prompt and fuel pump protection unit. The automotive fuel quantity voice prompt and fuel pump protection device can be mounted on any electric control automobile, has wide application scope and avoids the burnout of a fuel pump, caused by oil-free idling. The automotive fuel quantity voice prompt and fuel pump protection device has the characteristics of simple circuit and low cost, is convenient to manufacture and the like.
Description
Technical field
The utility model belongs to automobile technical field, relates to automotive safety and sound prompt device, relates in particular to voice suggestion of a kind of SCM Based vehicle fuel amount and oil pump protective device.
Background technology
Along with the continuous development of science and technology and the raising day by day of living standards of the people, people also more and more pay attention to the selection of trip instrument and pay close attention to.Automobile is the most common in people's daily life, the most general one of the highest vehicles of frequency that also are to use, and the comfortableness that people take for automobile and the requirement of handiness are more and more higher.Fuel oil is the topmost energy of Hyundai Motor, the mileage that how much directly influences running car of oil mass, and owing to driver's carelessness fails in time to refuel to automobile, cause vehicle to cast anchor on the way, even more serious is when vehicle owing to not having oil to stop working, usually incident is burning of fuel pump, reason is that the cooling of oil pump is to be realized by its fuel oil of flowing through, when amount of fuel is zero, oil pump then can't cool off, and will assemble a large amount of thermal conductances in the short time and cause oil pump and burn, if add fuel oil this moment again, engine also can't start, can only be entrained back into maintenance depot and keep in repair.If when such accident takes place, can bring unnecessary trouble and pecuniary loss to the driver.Oil pump protective device when voice suggestion during by the vehicle fuel quantity not sufficient and amount of fuel are zero; just can in time remind the driver to refuel a car; prevent that oil pump from burning and when fuel oil is zero, disconnect the fuel pump circuit; and automobile can also start when refueling a car once more, thereby has improved the convenience that automobile uses.
Summary of the invention
The purpose of this utility model is, voice suggestion of a kind of SCM Based vehicle fuel amount and oil pump protective device are provided.This device solves the not enough and problem that ignored by the driver of amount of fuel; the accident of burning fuel pump when avoiding oil mass to be zero effectively; promptly handle the information of fuel level sender input by the AT89C52 single-chip microcomputer; if determine the work of the not enough control of amount of fuel sound prompt device; thereby reach voice reminder driver's purpose; if oil mass disconnects the oil pump protective relay when being zero control voice suggestion, thereby reaches the purpose of protection oil pump.
In order to realize above-mentioned task, the utility model adopts following technical scheme to be achieved:
Voice suggestion of a kind of SCM Based vehicle fuel amount and fuel pump protective device, comprise the fuel level sensor of installing in automobile ignition switch, panel board and the panel board, it is characterized in that, also include digital to analog converter, address latch, information process unit and the voice suggestion and the oil pump protected location that connect successively; Wherein, voice suggestion and oil pump protected location are made up of sound prompt device and oil pump protective relay, information process unit, digital to analog converter, address latch and sound prompt device are directly installed on the panel board, and the oil pump protective relay is installed in the engine safety box; And by power supply being provided for digital to analog converter, address latch, information process unit and voice suggestion and oil pump protected location after the step-down of accumulator process.
Other characteristics of the present utility model are:
Adopt the AT89C52 single-chip microcomputer in the described information process unit.
At least contain speech chip and loudspeaker in the described sound prompt device.
Described digital to analog converter adopts cmos component ADC0809.
The model of described address latch is 74LS373.
The signal input analog-to-digital converter of fuel level sensor is saved in the address latch; analog to digital converter detects the fuel oil in fuel tank position in real time; and the conversion of signals of fuel level sensor become digital signal; by address latch input information processing unit; information process unit receives the information of oil level signal input block input in real time; and these information are handled fast and accurately the control signal after voice suggestion and the output of oil pump protected location are handled then.
SCM Based vehicle fuel amount of the present utility model voice suggestion and oil pump protective device can be installed on any electronic automobile, have wide range of applications.According to the detected fuel level of fuel level sensor; information process unit is through handling; thereby the mileage number that the control sound prompt device reminds driver's amount of fuel to travel, and control oil pump protective relay conducting and disconnection avoid fuel pump owing to not having oil idle running to burn.The utlity model has easy to make, characteristics such as circuit is simple, and cost is low.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is circuit catenation principle figure of the present utility model.
Fig. 3 is a workflow diagram of the present utility model.
Below in conjunction with drawings and Examples the utility model is further specified.
Embodiment
With reference to Fig. 1, SCM Based vehicle fuel amount of the present utility model voice suggestion and oil pump protective device, comprise the fuel level sensor of installing in automobile ignition switch, panel board and the panel board (or claiming the fuel gauge sensor), also include digital to analog converter, address latch, information process unit and the voice suggestion and the oil pump protected location that connect successively; Wherein, voice suggestion and oil pump protected location are made up of sound prompt device and oil pump protective relay, information process unit, digital to analog converter, address latch and sound prompt device are directly installed on the panel board, and the oil pump protective relay is installed in the engine safety box; And provide power supply through oil supply figure place weighted-voltage D/A converter, address latch, information process unit and voice suggestion and oil pump protected location after the step-down by accumulator.
In the present embodiment, adopt the AT89C52 single-chip microcomputer in the information process unit, digital to analog converter adopts cmos component ADC0809.The model of address latch adopts 74LS373.
Fuel gauge sensor the fuel gauge of digital to analog converter from instrument panel (oil float) takes out, through cmos component ADC0809 convert digital signal to and send into address latch 74ls373, by address latch 74ls373 input AT89C52 single-chip microcomputer, the AT89C52 single-chip microcomputer is by the work of address latch 74ls373 control ADC0809 analog signal detection passage.Cmos component ADC0809 adopts 8 tunnel input channels, 8 A/D converters, and promptly resolution is 8; Has conversion start-stop control end; Single+power supply of 5V power supply; Analog input voltage scope 0～+ 5V, do not need the calibration of zero point and full scale; Low-power consumption, about 15mW.If the signal voltage of fuel gauge sensor adopts 0～+ 12V then the dropping resistor of must when signal is imported the ADC0809 single-chip microcomputer, connecting, if the signal voltage of fuel gauge sensor adopt 0～+ 5V then do not need resistance in series.
The AT89C52 single-chip microcomputer is a single-chip microcomputer that Atmel company produces.It comprises the 8-bit microprocessor of high-performance, low-power consumption, include 8k bytes can be erasable repeatedly read-only program memory (PEROM) and the random data storer (RAM) of 256 bytes, device adopts high density, the nonvolatile storage technologies production of Atmel company.Information process unit mainly receives and handles the information that the oil level signal input unit transmits, and to voice suggestion and oil pump protected location unit output control signal.
ADC0809 is the cmos component that has the steering logic of 8 A/D converters, No. 8 multi-way switchs and microprocessor compatibility.It is a successive approximation type a/d converter, can with the single-chip microcomputer direct interface.ADC0809 is made up of one 8 path analoging switch, address latch and code translator, an A/D converter and a ternary output latch.But 8 analog channels of multi-way switch gating allow 8 tunnel analog quantity timesharing input, and shared A/D converter is changed.Ternary output lock device is used to latch the digital quantity that A/D converts, and when the OE end is high level, just can take the data that convert away from ternary output latch.
ADC0809 requires input analog amount: single monopole, voltage range are 0-5V, if signal is too little, must amplify; The analog quantity of input should remain unchanged in transfer process, and is too fast if analog quantity changes, and then needs to increase before input sampling hold circuit.
Voice suggestion and oil pump protected location are divided into sound prompt device and oil pump protective relay two parts.At least contain PM5020 speech chip and loudspeaker in the sound prompt device, wherein speech chip adopts Beijing core sound exhibition to open up the PM5020 speech chip that electronics technology company limited produces, this chip is the FLASHRAM structure, can erasable repeatedly typing, and the life-span is more than 10,000 times; Supply voltage 3-6V, quiescent current 1uA, working current 50mA directly drives 8 ohm 0.5 watt loudspeaker; The voice of recording can reach 128 sections totally 20 seconds; Carry eight input ports, nine output ports, function all can be by User Defined; Cooperate programming software can develop parallel, string property, various control pattern such as intelligent; Development system supports the user to this assembly online programming (ISP).The oil pump protective relay is connected in the circuit between FP Fuel Pump Relay and the oil pump, and the oil pump protective relay can be selected the model identical with FP Fuel Pump Relay, and is installed in the engine safety box.
Digital to analog converter, address latch, information process unit and sound prompt device can be directly installed on the panel board.
With reference to Fig. 2, the power supply of device will be reduced to 5V through the ignition switch supply voltage by accumulator by circuit of three-terminal voltage-stabilizing integrated LM7805 and use for system.Connect by fuel gauge sensor (oil float) signal of instrument panel conveying and the IN0 of cmos component ADC0809, if the fuel gauge sensor signal voltage is 0～+ 12V then the dropping resistor R4 that must when signal is imported cmos component ADC0809, connect, if the signal voltage of fuel gauge sensor be 0～+ 5V then do not need resistance in series R4.P0.0～P0.7 of single chip computer AT 89C52, ALE mouth link to each other with D0～D7, the LE mouth of address latch 74ls373 respectively, thereby the O0 of control address latch 74LS373～O2 mouth output control signal, the O0 of address latch 74ls373～O2 mouth links to each other with ADDA, ADDB, the ADDC mouth of cmos component ADC0809, the IN0 mouth work of control cmos component ADC0809, cmos component ADC0809 is by with 2
-1～2
-8The P0 mouth of the single chip computer AT 89C52 that mouth links to each other is the digital signal input single chip computer AT 89C52 after changing.The PM5020 speech chip can be recorded 128 sections recording, if need arbitrary section voice in 128 sections of the controls playing, can pass through the K1(data terminal), the K2(clock end) import segment number serially.Data terminal is effective during rising edge clock, and data low order is preceding.The address of all voice segments is 80H～FFH.01 is the busy signal end, during noble potential, and speech play, the busy signal of playing PM5020 when finishing drags down.The K1 of PM5020 speech chip, K2,01 mouthful link to each other with P3.2, P3.1, the P3.0 mouth of AT89C52.The PM5020 speech chip is controlled the 0.5 watt of loudspeaker work in 8 Europe by SP1 mouth control triode 8050.AT89C52 controls the oil pump protective relay by P1.0 mouth control triode 9012 and disconnects with closed, thereby circuit disconnects and conducting between controlling from the FP Fuel Pump Relay to the oil pump.
With reference to Fig. 3; SCM Based vehicle fuel amount of the present utility model voice suggestion and oil pump protective device workflow are as follows: ignition switch is connected; the single-chip microcomputer electrification reset; program initialization; begin to detect the voltage signal of fuel gauge sensor (oil float) input; this voltage signal enters address latch 74ls373 after cmos component ADC0809 changes digital signal into, and enters the AT89C52 single-chip microcomputer through address latch 74ls373 and judge fuel tank fuel quantity: 1) if amount of fuel abundance then turn back to master routine.2) travel 2 kilometers as low on fuel, voice suggestion " note that low on fuel travels 2 kilometers ", reminds twice continuously, finishes; If low on fuel travels 1 kilometer, voice suggestion " note that low on fuel travels 1 kilometer ", reminds twice continuously, finishes; Travel 0.5 kilometer as low on fuel, voice suggestion " note that low on fuel travels 0.5 kilometer ", reminds twice continuously, finishes.When oil mass is zero,, disconnect the oil pump protective relay immediately for preventing overheated the burning out of fuel pump idle running; thereby disconnect the circuit between FP Fuel Pump Relay and the fuel pump, cut-out of fuel pump, and voice suggestion " oil mass is zero; would you please refuel " turn back to master routine then.Because during automobile fuel filler, ignition switch is closed, and can guarantee to add oil like this, all can reopen ignition switch at every turn, program re-executes, and guarantees can not make mistakes.
Claims (6)
1. SCM Based vehicle fuel amount voice suggestion and fuel pump protective device, comprise the fuel level sensor of installing in automobile ignition switch, panel board and the panel board, it is characterized in that, also include digital to analog converter, address latch, information process unit and the voice suggestion and the oil pump protected location that connect successively; Wherein, voice suggestion and oil pump protected location are made up of sound prompt device and oil pump protective relay, information process unit, digital to analog converter, address latch and sound prompt device are directly installed on the panel board, and the oil pump protective relay is installed in the engine safety box; And by power supply being provided for digital to analog converter, address latch, information process unit and voice suggestion and oil pump protected location after the step-down of accumulator process.
2. the vehicle fuel amount voice suggestion of single-chip microcomputer as claimed in claim 1 and fuel pump protective device is characterized in that, adopt the AT89C52 single-chip microcomputer in the described information process unit.
3. the vehicle fuel amount voice suggestion of single-chip microcomputer as claimed in claim 1 and fuel pump protective device is characterized in that, contain speech chip and loudspeaker in the described sound prompt device at least.
4. the vehicle fuel amount voice suggestion of single-chip microcomputer as claimed in claim 3 and fuel pump protective device is characterized in that, described speech chip adopts the PM5020 speech chip.
5. the vehicle fuel amount voice suggestion of single-chip microcomputer as claimed in claim 1 and fuel pump protective device is characterized in that, described digital to analog converter adopts cmos component ADC0809.
6. the vehicle fuel amount voice suggestion of single-chip microcomputer as claimed in claim 1 and fuel pump protective device is characterized in that, the model of described address latch is 74LS373.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206552065U CN201876982U (en) | 2010-12-13 | 2010-12-13 | Automotive fuel quantity voice prompt and fuel pump protection device based on single chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206552065U CN201876982U (en) | 2010-12-13 | 2010-12-13 | Automotive fuel quantity voice prompt and fuel pump protection device based on single chip |
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| CN201876982U true CN201876982U (en) | 2011-06-22 |
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| CN2010206552065U Expired - Fee Related CN201876982U (en) | 2010-12-13 | 2010-12-13 | Automotive fuel quantity voice prompt and fuel pump protection device based on single chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157026A (en) * | 2014-08-19 | 2014-11-19 | 杨锦才 | Driving path-based intelligent oiling prompting method |
| CN113685284A (en) * | 2021-08-24 | 2021-11-23 | 中国第一汽车股份有限公司 | Electric fuel pump control method, device, equipment and storage medium |
-
2010
- 2010-12-13 CN CN2010206552065U patent/CN201876982U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157026A (en) * | 2014-08-19 | 2014-11-19 | 杨锦才 | Driving path-based intelligent oiling prompting method |
| CN113685284A (en) * | 2021-08-24 | 2021-11-23 | 中国第一汽车股份有限公司 | Electric fuel pump control method, device, equipment and storage medium |
| CN113685284B (en) * | 2021-08-24 | 2023-02-28 | 中国第一汽车股份有限公司 | Electric fuel pump control method, device, equipment and storage medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20111213 |