Motorcycle fuel-level electronic display unitTechnical field
The invention belongs to Level Control Technology field, relate to a kind of motorcycle fuel-level electronic display unit.
Background technology
Motorcycle fuel-level electronic display unit of the present invention, it adopts fuel level sensor sampling, by diode displaying oil level, changed, it is compared with traditional pointer fuel level gauge, there is the motorcycle oil consumption situation that can monitor at any time, intuitive display is accurate, and circuit has simple in structure, can effectively prevent fuel oil to exhaust, can drive envoy to motorcycle and bring great convenience.
Motorcycle fuel-level electronic display unit of the present invention can be used for reequiping the motorcycle that early stage production does not have fuel quantity indication, and the amount of fuel that can allow vintage motorcycle car owner in good time grasp motorcycle changes.
The circuit of motorcycle fuel-level electronic display unit is all used common components and parts to make, and cost of manufacture only needs thirties yuan, is suitable for factory and develops in batches.
Below describe motorcycle fuel-level electronic display unit of the present invention related relevant technologies content in implementation process in detail.
Summary of the invention
Goal of the invention and beneficial effect: motorcycle fuel-level electronic display unit of the present invention, it adopts fuel level sensor sampling, by diode displaying oil level, changed, it is compared with traditional pointer fuel level gauge, there is the oil consumption situation that can monitor at any time, intuitive display is accurate, and circuit has simple in structure, can effectively prevent fuel oil to exhaust, can drive envoy to motorcycle and bring great convenience.Motorcycle fuel-level electronic display unit of the present invention can be used for reequiping the motorcycle that early stage production does not have fuel quantity indication, and the amount of fuel that can allow vintage motorcycle car owner in good time grasp motorcycle changes.
Circuit working principle: resistance R 1 forms bleeder circuit with fuel level sensor RW, when pasta is during in a high position, the resistance of fuel level sensor RW is almost nil.Between the be of NPN transistor VT1, voltage is well below 0.6V, and NPN transistor VT1 ends, NPN transistor VT2 conducting.Red light emitting diodes LED1 no current by and not luminous.Only have green LED LED2 luminous, represent that oil level is very high.
When fuel level declines, the resistance of fuel level sensor RW raises, when between the be of NPN transistor VT1, voltage approaches 0.6V, the On current of NPN transistor VT2 reduces, at this moment there is part electric current to flow through red light emitting diodes LED1, along with the resistance of fuel level sensor RW strengthens gradually, it is bright that red light emitting diodes also turns gradually, and at this moment synthetic light graduates into apple green, orange by green.When between the be of NPN transistor VT1, voltage is greater than 0.65V, green LED extinguishes, and red light emitting diodes LED1 sends simple red light, now shows that fuel oil is finished, and reminds car owner to need to refuel.
Technical scheme: motorcycle fuel-level electronic display unit, it comprises 6V DC voltage-stabilizing, oil level detection circuit, oil level luminotron display circuit, it is characterized in that:
Oil level detection circuit: it is comprised of fuel level sensor RW, resistance R 1, resistance R 2, NPN transistor VT1 and switching diode D1, one end of a terminating resistor R1 of fuel level sensor RW and one end of resistance R 2, the anodal VCC of other end connection circuit of resistance R 1, the other end of the base stage connecting resistance R2 of NPN transistor VT1, the collector of NPN transistor VT1 connects the negative pole of switching diode D1, the emitter connection circuit ground GND of the other end of fuel level sensor RW and NPN transistor VT1;
Oil level luminotron display circuit: it is by NPN transistor VT2, resistance R 3, red high brightness light emitting diode LED 1, resistance R 4 and green high brightness light emitting diode LED 2 form, one end of the base stage connecting resistance R3 of NPN transistor VT2, the anodal VCC of other end connection circuit of the collector of NPN transistor VT2 and resistance R 3, the anodal VCC of anodal connection circuit of red high brightness light emitting diode LED 1, the negative pole of red high brightness light emitting diode LED 1 connects one end of the emitter of NPN transistor VT2 and the collector of NPN transistor VT1 and resistance R 4, the positive pole of another termination switching diode D1 of resistance R 4 and the positive pole of green high brightness light emitting diode LED 2, the negative pole connection circuit ground GND of green high brightness light emitting diode LED 2,
The anodal VCC of 6V DC power anode connection circuit, 6V DC power cathode connection circuit ground GND.
Accompanying drawing explanation
Accompanying drawing is embodiment circuit working schematic diagram of motorcycle fuel-level electronic display unit provided by the invention.
Embodiment
According to motorcycle fuel-level electronic display unit circuit working schematic diagram shown in the drawings and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in summary of the invention, and the components and parts technical parameter described in embodiment requires and circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.
The selection of components and parts and technical parameter thereof
RW is that oil is sensor, and model can be selected graceful lily magnolia (TB50-B) motorcycle fuel level sensor used;
VT1, VT2 are NPN transistor, and the model of selecting is 2SC9013, β >=140;
Resistance is all used metalfilmresistor, and the resistance of resistance R 1～R3 is 1K Ω; The resistance of resistance R 4 is 220 Ω, and power is 1/2W;
D1 is switching diode, and the model of selecting is 1N4148;
LED1 is red high brightness LED, and LED2 is green high brightness LED.
Circuit production main points and circuit debugging
The circuit structure of motorcycle fuel-level electronic display unit is fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and welding quality are after careful inspection is correct, circuit of the present invention does not need to carry out any debugging substantially, and connecting 6V direct supply can work;
When making motorcycle fuel-level electronic display unit, the installation that red high brightness light emitting diode LED 1 and green high brightness light emitting diode LED 2 tightly should be close together, otherwise the display effect of light-emitting diodes tube transitions color when affecting oil level and mediating;
Motorcycle fuel-level electronic display unit of the present invention can be used for reequiping the motorcycle that early stage production does not have fuel oil indication, can allow car owner grasp the fuel quantity of motorcycle in good time;
If while being used on other model motorcycles such as old-fashioned lily magnolia, only need to adjust a little the resistance of resistance R l;
The electric current of fuel level sensor RW is about 6mA, and complete machine power consumption electric current is less than 30mA, and motorcycle fuel-level electronic display unit, than pointer pasta table power consumptive province, is used safer.