CN201040769Y

CN201040769Y - Anticorrosion electronic device for automobile body

Info

Publication number: CN201040769Y
Application number: CNU2006201562524U
Authority: CN
Inventors: 陈武强
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-08
Filing date: 2006-11-08
Publication date: 2008-03-26
Anticipated expiration: 2016-11-08

Abstract

A vehicle body anticorrosion electronic device relates to an anticorrosion electronic equipment, in particular to an electronic device which is used to prevent or slow down the metal parts of the vehicle body from rusting. The utility model provides a vehicle body electronic anticorrosion device which is provided with a power supply unit, a logic control unit and a high frequency driving unit. The input end of the power supply unit is connected with the power supply of a vehicle battery, the logic control unit is connected with the input ends of the power supply unit and the high frequency driving unit respectively, and the output end of the high frequency driving unit is connected with the vehicle body metal parts. The utility model has the advantages of small volume, good work stability, portable and easy installation, strong body anticorrosion ability, no effect on the other electrical system of the vehicle and low energy-consuming, etc.

Description

Corrosion prevention electronic device of automobile body

Technical field

The utility model relates to a kind of protection against corrosion electronics, especially relates to a kind of electronic installation that is used to prevent or slow down the corrosion of body of a motor car metal parts.

Background technology

Aspect many equipment such as automobile, boats and ships, oil pipeline, water supply pipe,, also caused many quality accidents at present, caused many financial losses because the oxidation corrosion of metal object has brought numerous inconvenience for people's life.

Along with developing rapidly of Chinese Automobile Industry ', the domestic automobile recoverable amount increases fast, and the national at present time to motor vehicle liquidation prolongs than before to some extent simultaneously.In addition, in short supply along with petroleum resources, automobile develops toward lightweight and energy-conservationization direction step by step, the increasing the physical strength that means increasing body of a motor car and will weaken of minicar and economy car than in the past, the material of vehicle body is also comparatively frivolous, just seem all the more important of the protection against corrosion work of body of a motor car, this is not only in order to prolong the working life of automobile, also is in order to improve the driving safety of automobile simultaneously.Therefore, the protection against corrosion problem of automobile has become Automobile Design, manufacturing and has maintained important research project in each link.

Automobile is corroded under following several situations easily:

1. in order to remove snow and ice, often use the stronger Snow Agent of corrodibility through snowing a great deal on road in the city winter of Chinese some areas, Snow Agent causes the corrosion of body of a motor car metal parts easily;

2. not only atmospheric moisture is bigger for coastal area, and sea wind carries a large amount of salinities, causes the automobile metal component corrosion easily;

3. the air environmental pollution of some areas makes rain acidity raise, and causes the automobile metal component corrosion easily;

4. in the vehicle driving process, vehicle body is bump such as chassis and rubble, grit especially, causes automobile metal parts surface coat of painting to come off, and this further causes the automobile metal parts to be corroded easily;

5. carwash and cleaning improperly, vehicle substance causes the automobile metal component corrosion easily improperly;

6. protective treatment such as spray paint is not done or only simply done to its appearance of part automobile metal parts, but the environment for use of vehicle is harsh, causes the automobile metal component corrosion easily.

The vapor pipe of many automobiles and the metal parts on the engine etc., all there is serious corrosion phenomena in the new car that has just dispatched from the factory even.For using a year vehicle of a specified duration, the vehicle body corrosion phenomenon is more obvious, the body of a motor car metal outer often occurs and comes off the phenomenon that has rusty stains together in company with paint.Automobile corrosive harm is many-sided, gently then influences outward appearance, and is heavy then can reduce the work-ing life of automobile and influence traffic safety.

Prevent that at present automobile from corroding employed rust-proofing method and mainly containing following several:

1, traditional coating is antirust:

With Chinese patent CN 00802390.5 " surface treated steel plate " is example; its mainly be on the surface of electrogalvanized steel plate coating to have the zinc phosphate that contains Mg be protective membrane; be that coating has the silicone resin protective membrane that contains with the functional group of organism reaction on the surface of protective membrane at this zinc phosphate again, prevent corrosion by mode at metal part surface coating protective membrane.

2, general polarity formula is antirust:

With Chinese patent CN 94244378.0 " the antirust device of automobile " is example, it is made up of 2 compound multivibrator, trigger triode, power supply and other Resistor-Capacitor Units that are made of integrated package and triode, select the some metal sheets that current potential is higher during use, be connected to two output terminals of this antirust device, and be connected to arbitrary position of car body, force automobile integral body to place a relatively low current potential, then can slow down automobile and get rusty.

The similar techniques scheme also has Chinese patent CN 01216618.9 " magneticsaturation potentiostat ", CN03250703.8 " the constant potential difference impressed current erosion protection system of different metal body " etc. with it.

Now mainly there are following problem in rust-proofing method that uses at present and device:

1. antirust because coating of traditional coating or the easy damaged of overlay own and can not be durable;

2. general polarity formula is antirust to be to pass to a small electric current (about about 0.3 microampere) on the car shell, making automobile case itself produce ion has an effect with Sauerstoffatom in the iron atom of isolated shell and the air and causes and get rusty, but this corrosion protection method proves that through a large amount of application rust-proof effect is not very desirable.

Summary of the invention

The purpose of this utility model is the problem that exists in the existing body of a motor car anti-corrosion method to provide a kind of body of a motor car electronics erosion protection system.

The technical solution of the utility model is to adopt output one high frequency electric pulse, be capacitively coupled to vehicle body, make automobile case obtain a certain amount of extra negative charge thus, the electronics that prevents metal self is seized and oxidized corrosion by airborne oxygen or other oxide compound, thereby allows the car body for corrosion protection ability improve greatly.

The utility model is provided with power subsystem, logic control element and high frequency drive unit.The power subsystem input terminus is connected with the Vehicular accumulator cell power supply, and logic control element is connected with the high frequency drive unit input terminus with power subsystem respectively, and the output terminal of high frequency drive unit is connected with the vehicle body metal parts.

Power subsystem is a filter circuit of pressure-stabilizing.Logic control element is a microcontroller, or microcontroller and electric source monitoring circuit, or microcontroller, electric source monitoring circuit and voltage of supply display circuit, or microcontroller, electric source monitoring circuit, voltage of supply display circuit and online programming circuit.High frequency drive unit is a controlled pulse generation circuit.

Compared with the prior art, outstanding advantage of the present utility model is:

1. owing to adopted voltage stabilizing chip and singlechip chip, therefore dwindle the volume of whole device, not only improved the job stability of system, and light easy installation;

2. can export high-frequency driving signal, make vehicle body to be coupled and obtain enough negative charges, thereby allow the car body for corrosion protection ability improve greatly, and this signal can not influence other electric system on the automobile;

3. system power dissipation is very low, but also design has supply voltage monitoring circuit, and system is worked when automobile storage battery voltage is sufficient with all strength, slow running when battery voltage is low, when under voltage, quit work, preventing the storage battery over-discharge can, or cause the not ignitable problem of engine.

The utility model can be widely used in anticorrosive metal and other relevant electronics protection against corrosion field of various vehicles.

Description of drawings

Fig. 1 is the circuit block diagram of the utility model embodiment.

Fig. 2 is that the circuit of the utility model embodiment is formed schematic diagram.

Embodiment

Following examples will the utility model is described in further detail in conjunction with the accompanying drawings.

As shown in Figure 1, the utility model embodiment is provided with power subsystem 1, logic control element 2 and high frequency drive unit 3, power subsystem 1 provides power supply for whole device, logic control element 2 comprises that power supply monitoring, voltage of supply show and the online programming function, it simultaneously also is the core that pulse signal produces and controls, its output high-frequency signal is given high frequency drive unit 3, high-frequency pulse signal is by after the high frequency drive unit 3, strengthened driving force, then by condenser coupling, after lead is exported this pulse to vehicle body metal parts 5.Vehicular accumulator cell power supply 4 in Fig. 1 provides power supply for whole device.

Because the utility model is output as a high frequency positive pulse signal; make thus the vehicle body metal shell from the battery feed negative pole () obtain extra negative charge (electronics); give oxygen or other oxide compound by sacrificing these extra electronics; thereby it is protected to allow the electronics of car body self be able to, and has obviously improved antirust ability.

In Fig. 2, filter circuit of pressure-stabilizing comprises voltage stabilizing chip U1, electric capacity EC1, C1, C2, diode D1, D2 and safety fuse F1, wherein, the end of safety fuse F1 connects the positive pole of Vehicular accumulator cell power supply, the other end is connected with the 3 pin VIN of U1 through diode D1, also is connected with electric capacity EC1, C1 and diode D2; Electric capacity EC1, C1 and diode D2 parallel connection, electric capacity EC1, C1 are in parallel with diode D2, and diode D2 one end is connected the other end ground connection with the 3 pin VIN of D1 and U1.The 2 pin GND ground connection of voltage stabilizing chip U1.Capacitor C 2 one ends are connected the other end ground connection with the 1 pin VOUT of voltage stabilizing chip U1.

Logic control element adopts microcontroller, electric source monitoring circuit, voltage of supply display circuit and online programming circuit, comprise singlechip chip U2, resistance R 1～R8, capacitor C 3 and C4, LED 1, triode Q1 and connector HD1, wherein, the VDD pin of chip U2 connects the 5V power supply of the output of U1 in the power subsystem, simultaneously with HD1+the 5V pin is connected; Its GP0/AN0/CIN+/ICSPDAT, GP1/AN1/CIN-/VREF/ICSPCLK and GP3/MCLR/VPP connect DAT, CLK and the VPP pin of HD1 respectively; Its GP5/T1CK1/0SC1/CLKIN pin is connected with R2 through C3; Its GP4/AN3/T1G/0SC2/CLKOUT pin is connected with C4, R7 and R6 through R8; Its GP2/AN2/T0CK1/INT/COUT is connected with the C5 of high frequency drive circuit; Its VSS ground connection; R1 is attempted by between the VDD and GP3/MCLR/VPP bipod of U2; 1 pin of Q1 is connected with C3 through R2, passes through R3 ground connection simultaneously, the 3 pin ground connection of Q1; 2 pin of Q1 are connected with LED1 one end through R4, and the LED1 the other end is connected with 12V; R6 is connected with 12V through R5, through R7 ground connection, also passes through C4 ground connection; The GND pin ground connection of HD1.

Controlled pulse generation circuit comprises inductance L 1, triode Q2～Q5, resistance R 9～R15, capacitor C 5～C8, and wherein, 1 pin of Q2 is connected with C5 through R9, and through R10 ground connection, the 3 pin ground connection of Q2; 1 pin of Q3 is connected with 2 pin of Q2 through R11, meets 12V through R12 simultaneously; 2 pin of Q3 are connected with 1 pin of 1 pin of Q4, Q5, and through R13 ground connection, are connected with 3 pin of Q4,3 pin, C6 and the C7 of Q5 through R14 simultaneously; 2 pin of Q4 are connected with 3 pin and the 12V of Q3, are connected with C7 through C6 simultaneously; The 2 pin ground connection of Q5; The end of L1 is connected with C7 by C8, and the other end is through R15 ground connection, and is connected with the vehicle body metal parts by wire.

In Fig. 2, U2 is a microcontroller, and electric source monitoring circuit is made up of R5, R6, R7, R8 and C4, and the voltage of supply display circuit is by R2, R3, R4, Q1, LED1 and C3, and online establishment journey circuit is made up of R1 and HD1.

In Fig. 2, optional 7805 series product of voltage stabilizing chip U1, the optional PIC12 of singlechip chip U2 series or the identical or close singlechip chip of function with it, other elements do not have particular requirement.

Below provide the working process of the utility model embodiment.Bright as LED1, the indication device works better; As do not work, expression is unusual, and this situation generally is because input voltage is low excessively." 3 " pin of U2 is the power supply monitoring port, and when voltage of supply was lower than the 11.5V left and right sides, device quit work, and this moment, " 2 " pin control LED1 of U2 extinguished the expression operation irregularity; When voltage of supply is 11.5～12.4V, the device slow running; When voltage of supply was 12.5～17.0V, device is work with all strength; When the device works better, LED1 is bright.

Go up five wires corresponding by connector HD1 with singlechip chip corresponding function port, can carry out the programming once more of software immediately to singlechip chip, can carry out online upgrading to software where necessary, utilize this function can make the production of product convenient more simultaneously.

" 5 " pin of U3 is the time variable control output port, and high-frequency pulse signal is provided, and the positive rise of this pulse signal makes the Q2 conducting, and Q3 conducting then causes the moment conducting of Q4, makes the rapid charge of output stage coupling capacity.When the negative edge of pulse signal arrived, Q2 and Q3 closed, and cause the moment conducting of Q5, made the rapid discharge of output stage coupling capacity.Pulse signal through coupling capacity is transferred to the vehicle body metal parts by lead, and whole device is started working.

Claims

1. body of a motor car electronics erosion protection system, it is characterized in that being provided with power subsystem, logic control element and high frequency drive unit, the external Vehicular accumulator cell power supply of power subsystem input terminus, logic control element is connected with the high frequency drive unit input terminus with power subsystem respectively, the external vehicle body metal parts of the output terminal of high frequency drive unit;

Logic control element is a microcontroller, or microcontroller and electric source monitoring circuit, or microcontroller, electric source monitoring circuit and voltage of supply display circuit, or microcontroller, electric source monitoring circuit, voltage of supply display circuit and online programming circuit, high frequency drive unit is a controlled pulse generation circuit.

2. body of a motor car electronics erosion protection system as claimed in claim 1 is characterized in that described power subsystem is a filter circuit of pressure-stabilizing.

3. body of a motor car electronics erosion protection system as claimed in claim 2 is characterized in that described filter circuit of pressure-stabilizing is provided with voltage stabilizing chip U1, electric capacity EC1, C1, C2, and diode D1 and D2 and safety fuse F1, wherein,

The end of safety fuse F1 connects the positive pole of Vehicular accumulator cell power supply, and the other end is connected with the 3 pin VIN of U1 through diode D1, also is connected with electric capacity EC1, C1 and diode D2;

Electric capacity EC1, C1 and diode D2 parallel connection, electric capacity EC1, C1 are in parallel with diode D2, and diode D2 one end is connected the other end ground connection with the 3 pin VIN of D1 and U1;

The 2 pin GND ground connection of voltage stabilizing chip U1;

Capacitor C 2 one ends are connected the other end ground connection with the 1 pin VOUT of voltage stabilizing chip U1.

4. body of a motor car electronics erosion protection system as claimed in claim 1, it is characterized in that described microcontroller, electric source monitoring circuit, voltage of supply display circuit and online programming circuit are provided with singlechip chip U2, resistance R 1～R8, capacitor C 3 and C4, LED 1, triode Q1 and connector HD1, wherein

The VDD pin of chip U2 connects the 5V power supply of the output of U1 in the power subsystem, simultaneously with HD1+the 5V pin is connected;

Its GP0/AN0/CIN+/ICSPDAT, GP1/AN1/CIN-/VREF/ICSPCLK and GP3/MCLR/VPP connect DAT, CLK and the VPP pin of HD1 respectively;

Its GP5/T1CK1/0SC1/CLKIN pin is connected with R2 through C3;

Its GP4/AN3/T1G/0SC2/CLKOUT pin is connected with C4, R7 and R6 through R8;

Its GP2/AN2/T0CK1/INT/COUT is connected with the C5 of high frequency drive circuit;

Its VSS ground connection;

R1 is attempted by between the VDD and GP3/MCLR/VPP bipod of U2;

1 pin of Q1 is connected with C3 through R2, passes through R3 ground connection simultaneously, the 3 pin ground connection of Q1;

2 pin of Q1 are connected with LED1 one end through R4, and the LED1 the other end is connected with 12V;

R6 is connected with 12V through R5, through R7 ground connection, also passes through C4 ground connection;

The GND pin ground connection of HD1.

5. body of a motor car electronics erosion protection system as claimed in claim 1 is characterized in that described controlled pulse generation circuit is provided with inductance L 1, triode Q2～Q5, resistance R 9～R15, capacitor C 5～C8, wherein,

1 pin of Q2 is connected with C5 through R9, through R10 ground connection, the 3 pin ground connection of Q2;

1 pin of Q3 is connected with 2 pin of Q2 through R11, meets 12V through R12 simultaneously;

2 pin of Q3 are connected with 1 pin of 1 pin of Q4, Q5, and through R13 ground connection, are connected with 3 pin of Q4,3 pin, C6 and the C7 of Q5 through R14 simultaneously;

2 pin of Q4 are connected with 3 pin and the 12V of Q3, are connected with C7 through C6 simultaneously;

The 2 pin ground connection of Q5;

The end of L1 is connected with C7 by C8, and the other end is through R15 ground connection, and is connected with the vehicle body metal parts by wire.