CN101458114B

CN101458114B - Automobile oil tank digital display

Info

Publication number: CN101458114B
Application number: CN200810249709XA
Authority: CN
Inventors: 蔺兰忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-25
Filing date: 2008-12-25
Publication date: 2010-12-01
Anticipated expiration: 2028-12-25
Also published as: CN101458114A

Abstract

The invention relates to a digital display of an automobile oil tank, comprising a control circuit, a mechanical transmission part arranged in the oil tank, a digital display arranged in a cab; wherein, the mechanical transmission part comprises a horizontal fixed plate on which a freely rotating interlock rod and a fixed resistance rod are vertically arranged, an electromagnet is fixed on the fixed plate, a connecting bar is arranged on the electromagnet, an interlock ring corresponding to the connecting bar is fixed on the top end of the interlock rod, a ring-shaped floater which can slide freely up and down and rotates with the interlock rod is sheathed on the interlock rod, a contact terminal corresponding to a resistance rod is fixed on the floater; and the control circuit comprises an alignment circuit and an A/D converting circuit. The invention has the beneficial effects of simple structure, convenient assembly and maintenance, low manufacturing cost, high stability and reliability and intuitive display of fuel charge and remaining fuel, so that automobile drivers can effectively monitor fuel charge of gas stations while knowing remaining fuel, so as to refuel in time.

Description

Automobile oil tank digital display

(1) technical field

The invention belongs to the automotive oil tank annex, automobile oil tank digital display.

(2) background technology

Fuel monitor on the existing vehicle mostly is pointer-type greatly, the float of installing in fuel tank drives the slide-changing resistor sampling and cooperates, though this structure is cheap, simple in structure easy for installation, but can not accurately demonstrate the oil mass in the fuel tank intuitively, opportunity is provided for indivedual refuelling stations, take multiple illegal means to refuel less to the client, because of the pointer fuel monitor of tradition can not accurately be found out volume read-out intuitively, can only "ball-park" estimate, shown in the client also have no way out, cause damage to the client.The pointer display of tradition can not be accurate, sees that intuitively the interior remaining oil mass of fuel tank and hundred kilometers real fuel consumption steam supply car drivers objectively estimate the performance of automobile and the potential faults of internal combustion engine.

(3) summary of the invention

The present invention provides a kind of automobile oil tank digital display that can accurately demonstrate the oil mass in the fuel tank intuitively in order to remedy the deficiencies in the prior art.

The present invention is achieved through the following technical solutions:

Automobile oil tank digital display of the present invention, its special character is: comprise control circuit, be installed in the interior mechanical driving part of fuel tank, be installed in the digital indicator in the pilothouse; Mechanical driving part comprises the fixed head of level, on fixed head, be vertically installed with interlock rod and fixing resistor rod free to rotate, also be fixed with electromagnet on the fixed head, electromagnet is provided with connecting rod, interlock rod top is fixed with the interlock ring corresponding with connecting rod, but be with the float that an easy on and off slides and follows the annular of interlock rod rotation on the interlock rod, be fixed with a contact corresponding on the float with resistor rod; Control circuit comprises adjusts circuit and A/D change-over circuit.

Automobile oil tank digital display of the present invention, the xsect of resistor rod and float contact position is square.

The invention has the beneficial effects as follows, simple in structure, installation and maintenance are convenient, cheap, the reliability height can accurate and visual demonstration volume read-out, Fuel Oil Remaining, makes the volume read-out that the automobilist can the effective supervision refuelling station, make it to do any means and lead the consumer into a trap, reach the purpose of fair trading.Simultaneously can allow the driver know that accurately the Fuel Oil Remaining in the fuel tank in time refuels again, can also allow the driver objectively estimate hundred kilometers accurate fuel consumption behind the running car certain hour, judge vehicle fuel performance and the potential faults of internal combustion engine.

(4) description of drawings

Fig. 1 looks synoptic diagram for master of the present invention, and Fig. 2 is a schematic top plan view of the present invention, and Fig. 3 is a circuit diagram of the present invention.

Among the figure, K electromagnet, Rt resistor rod, 1 interlock ring, 2 sliding sleeves, 3 fixed heads, 4,13 screws, 5 fuel tanks, 6 interlock rods, 7 floats, 8 contacts, 10 connecting rods, 11,12 leads, IC, IC ₁, IC ₂, IC ₃Voltage stabilizing module, IC ₄Timing circuit, IC ₅The A/D modular converter, IC ₆The numeral display module.

(5) embodiment

Accompanying drawing is a kind of specific embodiment of the present invention.

Automobile oil tank digital display of the present invention comprises control circuit, is installed in the interior mechanical driving part of fuel tank, is installed in the digital indicator in the pilothouse; Mechanical driving part comprises the fixed head 3 of level, on fixed head, be vertically installed with interlock rod 6 and fixing resistor rod Rt free to rotate, also be fixed with electromagnet K on the fixed head, electromagnet is provided with connecting rod 10, interlock rod 6 tops are fixed with the interlock ring 1 corresponding with connecting rod, but be with the float 7 that an easy on and off slides and follows the annular of interlock rod rotation on the interlock rod 6, be fixed with a contact 8 corresponding on the float with resistor rod; Control circuit comprises adjusts circuit and A/D change-over circuit.The xsect of resistor rod Rt and float 7 contact positions is square.

This automobile oil tank digital display has used float, resistor rod, interlock rod, the electromagnet sampling probe as oil mass in the fuel tank, cooperates and adjusts circuit, and the A/D change-over circuit accurately shows the oil mass in the fuel tank intuitively with digital indicator at last.

In the circuit theory diagrams, Voltage stabilizing module IC, IC ₁, IC ₂, IC ₃, resistance R ₁, R ₂, R ₃Form to adjust circuit, power supply behind Voltage stabilizing module IC voltage regulation filtering to circuit working Voltage stabilizing module IC ₁, IC ₂Provide stable operating voltage, by Voltage stabilizing module IC ₂, IC ₃, resistance R ₁, R ₂, R ₃The constant-current supply of forming through B, C point by lead 11,12 to the resistor rod R that is fixed on the probe _tProvide not with the current/voltage of load variations with interlock rod 6, guarantee measuring resistance R _tThe linearity of resistance/voltage transformation stable, be convenient to accurate measurement, resistance R ₂The size of the electric current that provides of resistance size decision, in order to reach the security of probe in fuel tank, R ₁Select high-power high value for use, resistance R ₁Resistance should select enough big, to resistor rod R _tCarry the hundreds of millivolt with interlock rod 6, electric current is tens microamperes security measurement electric current and voltage only, the spark phenomenon that resistor rod Rt and interlock rod 6 is produced in any case.The fixed head 3 usefulness screws 4 and 13 of probe upper end are fixed on the fuel tank 5.Resistor rod Rt is fixedly mounted on a side of fixed head 3.Interlock rod 6 is installed in the opposite side of fixed head, be installed in float 7 on the interlock rod 6 can be on the interlock rod with what and the automobile oil consumption of refueling how much, move up and down along square interlock rod.As timing circuit IC ₄Carry an artificial cycle of setting during timing pip to electromagnet K, electromagnet K work, be installed in the interlock ring 1 of interlock rod 6 upper ends by connecting rod 10 pullings, interlock ring 1 drives interlock rod 6 and turns an angle to certain orientation, float 7 at interlock rod 6 also and then turns an angle simultaneously, being installed in float 7 contact 8 on one side at this moment closely contacts with resistor rod Rt, B point C point is at this moment by lead 11 in the circuit, 12 resistor rod Rt, interlock rod 6 forms path, the height that float 7 moves up and down, determine the resistance value of resistor rod Rt in the loop at this moment, also determine the voltage that A is ordered.The voltage that A is ordered enters A/D modular converter IC ₅After become digital signal by digital display module IC ₆Demonstrate magnitude of voltage,, transfer resistance R according to oil mass in the fuel tank 5 what ₆Make the numeral of demonstration consistent with oil mass.The numeral that shows is exactly the oil mass in the fuel tank 5, and how many later floats 7 fluctuates with oil mass, at set intervals, and timing circuit IC ₄To pulse of electromagnet K input, electromagnet K work drives interlock rod 6 and turns an angle, and the contact of installing on the float 7 is connected with resistor rod Rt, and the voltage of conversion simultaneously is through display module IC on the A point ₆Show that the numeral of demonstration is exactly the oil mass of this moment.Electromagnet K obtains setting back after the pulsed operation, and the contact 8 on the float 7 leaves certain position with resistor rod Rt again, waits for next IC at once ₄The pulse that timing circuit sends, electromagnet K work, transmission rod 6 rotates, and contact 8 contacts with resistor rod Rt, and the sampling and the display digit that produce certain intervals like this change process, display module IC ₆The memory lock function is arranged, and the numeral of lockable sampling last time remains to when next sampling changes always and renovates.

Probe upper end fixed head 3 needs to adopt the higher insulcrete manufacturing of intensity, and interlock rod 6 adopts steel or the copper material manufacturings preferably of intensity high electrical conductivity, and install interlock rod 6 upper ends is convenient to sliding sleeve 2 that the interlock rod rotates and can selects that intensity is plastic injection-moulded preferably to form for use.The interlock ring 1 that install interlock rod 6 upper ends adopts intensity steel processing and manufacturing preferably, and float 7 can be selected the stainless steel and iron or the copper material processing of high-quality for use, and contact 8 adopts the aldary manufacturing preferably of the better electric conductivity of intensity, resistor rod R _tThe employing resistance alloys is made, and to guarantee serviceable life and stability, all electronic devices and components in the circuit all will reach technical grade, guarantee the stability and the serviceable life of product.

Claims

1. an automobile oil tank digital display is characterized in that: comprise control circuit, be installed in the interior mechanical driving part of fuel tank, be installed in the digital indicator in the pilothouse; Mechanical driving part comprises the fixed head (3) of level, on fixed head, be vertically installed with interlock rod (6) free to rotate and fixing resistor rod (Rt), also be fixed with electromagnet (K) on the fixed head, electromagnet is provided with connecting rod (10), interlock rod (6) top is fixed with the interlock ring (1) corresponding with connecting rod, interlock rod (6) but on be with the float (7) that easy on and off slides and follows the annular that the interlock rod rotates, be fixed with a contact (8) corresponding on the float with resistor rod; Control circuit comprises adjusts circuit and A/D change-over circuit; Resistor rod (Rt) is square with the xsect of float (7) contact position.