CN102320247A

CN102320247A - Automobile short-circuit protection, indication and alarm device

Info

Publication number: CN102320247A
Application number: CN201110189659A
Authority: CN
Inventors: 樊登焕
Original assignee: Lishui Vocational Technical College
Current assignee: Lishui Vocational Technical College
Priority date: 2011-07-07
Filing date: 2011-07-07
Publication date: 2012-01-18
Anticipated expiration: 2031-07-07
Also published as: CN102320247B

Abstract

The invention relates to an automobile short-circuit protection, indication and alarm device. The invention provides an automobile short-circuit protection, indication and alarm device which can be connected on the original circuit of the automobile, is convenient to use, and can not only effectively protect the electric parts of the automobile but also sound and displace on a screen to indicate the fault of the automobile. The automobile short-circuit protection, indication and alarm device comprises a short-circuit protection device, an indication device and an alarm device, wherein the short-circuit protection device comprises a plurality of short-circuit protection circuits which are connected in parallel; the short-circuit protection device is connected with the indication device which comprises a plurality of indication circuits connected in parallel; and the indication device is connected with the alarm device through a resistor R. The automobile short-circuit protection, indication and alarm device is convenient to connect and can be connected onto the parts of the original circuit of the automobile. Through the indication device and the alarm device, in the case of short circuit or big leakage fault, the faulted circuit can be powered off and at the same time a voice alarm can be given, and the name of the faulted circuit can be precisely displayed.

Description

A kind of automobile circuit short-circuit protection and indicating alarm device

Technical field

The present invention relates to a kind of automobile circuit short-circuit protection and indicating alarm device.

Background technology

Automobile has become the requisite running vehicle of people in the current society.Present most chaufeur all is to obtain driving license through one to trimestral assault training; Only can drive, not know the structure of automobile basically, not understand that automobile circuit is formed and the working condition of car electrics; Existing automobile fault warning device does not have directly to point out the automobile function which circuit goes wrong; During the automobile circuit et out of order, do not know where fault goes out, and does not more know to take for what counter-measure.In the driving process of automobile, because the influence of many factors such as sweltering hot weather, sleet greasy, road conditions complicacy, temperature Change multiterminal, automobile circuit is short-circuited or fault such as electric leakage easily; Thereby the self-burning of vehicle phenomenon that causes also happens occasionally, still, and in the ready-made automobile circuit; Seldom use circuit protection device, electronic protection has just still less used, and in the electronic protection that oneself has; All be between current consumer and ground terminal, to add a resistance (taking by weighing a kind resistance); Obtaining sampling voltage,, cause the unusual of sampling voltage when in the circuit during current anomaly; Make fender guard work and cut off the electricity supply, the method that reaches the protection current consumer realizes., reality finds that automobile circuit is short-circuited or the leak current fault overwhelming majority is the power positive end bonding in repairing---the electric wire breakage between wire fuse mouth to the current consumer causes that at this moment, sample resistance does not work, and causes fender guard to lose efficacy.

Summary of the invention

In order to address the above problem, the present invention provides a kind of and can on original automobile circuit, connect, and easy to use, both actv. had been protected current consumer, again the automobile circuit short-circuit protection and the indicating alarm device of the fault of sounding screen display prompting simultaneously.

To achieve these goals; The present invention mainly is able to solve through following technical scheme: a kind of automobile circuit short-circuit protection and indicating alarm device, comprise short-circuit protection, indicating device and warning device, and described short-circuit protection is composed in parallel by several short-circuit protection circuits; Short-circuit protection circuit comprises relay normally closed contact J1-1; Relay normally closed contact J1-1 is connected to automobile fuse FX, is connected to resistance R 13 and K switch 1 on the automobile fuse FX respectively, and K switch 1 meets electrical apparatus for vehicle use RL; The other end power connection of described relay normally closed contact J1-1 and connection resistance R 11; The other end of resistance R 11 is distinguished the reverse input end of connecting resistance R12 and integrated chip IC1A, is connected to the positive input of resistance R 14 and integrated chip IC1A on the described resistance R 13 respectively, the base stage of the output termination aerotron BG11 of integrated chip IC1A; The collecting electrode of aerotron BG11 connects the base stage of resistance R 15 and aerotron BG12 respectively; The base stage of aerotron BG12 connects resistance R 17, and the collecting electrode of aerotron BG12 connects resistance R 16, and resistance R 16 connects the base stage of aerotron BG13; The collecting electrode of aerotron BG13 connects resistance R 17 and relay J respectively, and resistance R 17 connects diode D1; Described short-circuit protection connects described indicating device; Indicating device is composed in parallel by several indicating circuits; Indicating circuit comprises relay normally open contact J1-2, and relay normally open contact J1-2 connects read-out LED, and the relay normally open contact J1-2 other end inserts positive source VCC; Described indicating device is connected with described warning device through resistance R, and warning device comprises into chip IC 2, and integrated chip IC2 connects K switch; K switch meets stabilivolt Dw respectively and is connected with resistance R, the other end ground connection VSS of stabilivolt Dw, the base stage of described integrated chip IC2 output termination capacitor C and aerotron BG; The collecting electrode of aerotron BG meets loud speaker B; The other end connecting resistance R of loud speaker B, aerotron BG grounded emitter VSS, described capacitor C other end ground connection.

The present invention is easy to connect; Can be connected on this device on the device of original automobile circuit; Be short-circuited or during big leak current fault, in the disengagement failure circuit power, send audio alert and show the circuit name that breaks down clearly when circuit through indicating device and warning device.

Description of drawings

Fig. 1 is the schematic diagram 1 of the embodiment of the invention.

Fig. 2 is the schematic diagram 2 of the embodiment of the invention.

The specific embodiment

Below in conjunction with accompanying drawing 1-2, do further bright specifically to the specific embodiment of technical scheme of the present invention.

Embodiment: a kind of automobile circuit short-circuit protection and indicating alarm device, comprise short-circuit protection 1, indicating device 2 and warning device 3, described short-circuit protection 1 is composed in parallel by several short-circuit protection circuits 4; Short-circuit protection circuit 4 comprises relay normally closed contact J1-1, and relay normally closed contact J1-1 is connected to automobile fuse FX, is connected to resistance R 13 and K switch 1 on the automobile fuse FX respectively; K switch 1 meets electrical apparatus for vehicle use RL; The other end power connection of described relay normally closed contact J1-1 and connection resistance R 11, the other end of resistance R 11 is distinguished the reverse input end of connecting resistance R12 and integrated chip IC1A, is connected to the positive input of resistance R 14 and integrated chip IC1A on the described resistance R 13 respectively; The base stage of the output termination aerotron BG11 of integrated chip IC1A; The collecting electrode of aerotron BG11 connects the base stage of resistance R 15 and aerotron BG12 respectively, the grounded emitter VSS of aerotron BG11, and the base stage of aerotron BG12 connects resistance R 17; The collecting electrode of aerotron BG12 connects resistance R 16; Resistance R 16 connects the base stage of aerotron BG13, resistance R 16 ground connection VSS, and the collecting electrode of aerotron BG13 connects resistance R 17 and relay J respectively; Resistance R 17 connects diode D1, the grounded emitter VSS of aerotron BG13; Described short-circuit protection 1 connects described indicating device 2; Indicating device 2 is composed in parallel by several indicating circuits 5; Indicating circuit 5 comprises relay normally open contact J1-2, and relay normally open contact J1-2 connects read-out LED, and the relay normally open contact J1-2 other end inserts positive source VCC; Described indicating device 2 is connected with warning device 3 through resistance R, and warning device 3 comprises integrated chip IC2, and integrated chip IC2 connects K switch; K switch meets stabilivolt Dw respectively and is connected with resistance R, the other end ground connection VSS of stabilivolt Dw, the base stage of described integrated chip IC2 output termination capacitor C and aerotron BG; The collecting electrode of aerotron BG meets loud speaker B; The other end connecting resistance R of loud speaker B, aerotron BG grounded emitter VSS, described capacitor C other end ground connection.

When the automobile circuit normal operation, voltage B1>voltage A1, IC1A exports high level, and aerotron BG11 ends, and makes aerotron BG12, aerotron BG13 all end, and relay J is not worked.

When automobile circuit is short-circuited or during the fault of bigger electric leakage, flows through the electric current of wire fuse FX in the short-circuit protection 1, can on wire fuse FX, produce very big loss in voltage; Resistance R 14 two ends form sampling voltage B1 and descend rapidly, make voltage B1 < voltage A1, integrated chip IC1A output low level; Aerotron BG11 conducting makes the base potential of aerotron BG12 raise aerotron BG12 conducting; The conducting of aerotron BG12 makes the base potential of aerotron BG13 reduce, aerotron BG13 conducting, and relay J gets the electrician and does; Relay normally closed contact J1-1 is broken off, and failure circuit does not have electricity, plays the effect of protective circuit; The upper end of relay J (collecting electrode of aerotron BG13) makes circuit have auto-lock function through the resistance R 17 positive and negative base electrodes that are fed to aerotron BG12, guarantees that relay J is operated in guard mode always; Simultaneously, relay normally open contact J1-2 is closed, and the read-out LED in the indicating device 2 goes up and shows the failure circuit title, and warning device 3 sends chimes of doom, has both let chaufeur that fault is known what's what, and also provides convenience to the repairman.K switch in the warning device 3 during every circuit et out of order, is sent out an alarm sound under off-state, K switch behind a certain circuit et out of order, is just sent chimes of doom repeatedly continuously in the warning device 3 under closure state.

The circuit of all band wire fuses all can be installed this device in automobile; When many automobile circuits of appearance have short circuit or big leak current fault; Among the read-out LED of indicating device, can demonstrate every title that failure circuit is arranged simultaneously, the situation that can not cause confusion to total system.Because as long as the pressure drop on the wire fuse FX has than obvious variation, this device is worked immediately---the also self-locking of cutting off the electricity supply makes wire fuse FX also can not fuse (fusing of wire fuse has one period delay time).Indicating device shows that a kind of possibly be that electrical apparatus for vehicle use RL breaks down in (one or more) in bad order circuit, needs to change corresponding device with trouble-shooting; Also having a kind of possibly be that electrical apparatus for vehicle use RL itself is intact, and fault goes out in the electric wire of related circuit, must find the damaged location of electric wire, changes or repairs with insulating material, with trouble-shooting.If all fault is all got rid of, as long as turn-off automobile general supply, this device just resets, and makes all circuit recover original function automatically, and automobile can normally use; If a certain circuit (or many circuit) also has fault not get rid of; During closure related circuit electrical appliance control K switch, this device is protected again immediately and is reported to the police, the title of telltale indication fault circuit; Must continue maintenance and get rid of fault, till whole circuit are all normal.This device also has the phenomenon of avoiding automobile circuit " (short circuit or bigger electric leakage) in spite of illness " to go out car: as long as chaufeur is before going out car; Electrical apparatus for vehicle use RL is tried out one time; Ifs circuit has " sick (short circuit or bigger electric leakage) " this device can " report " immediately; If do not have " report " then explain that circuit is normal, to reach the effect of strick precaution possible trouble.

Claims

1. automobile circuit short-circuit protection and indicating alarm device; It is characterized in that comprise short-circuit protection (1), indicating device (2) and warning device (3), described short-circuit protection (1) is composed in parallel by several short-circuit protection circuits (4); Short-circuit protection circuit (4) comprises relay normally closed contact J1-1; Relay normally closed contact J1-1 is connected to automobile fuse FX, is connected to resistance R 13 and K switch 1 on the automobile fuse FX respectively, and K switch 1 meets electrical apparatus for vehicle use RL; The other end power connection of described relay normally closed contact J1-1 and connection resistance R 11; The other end of resistance R 11 is distinguished the reverse input end of connecting resistance R12 and integrated chip IC1A, is connected to the positive input of resistance R 14 and integrated chip IC1A on the described resistance R 13 respectively, the base stage of the output termination aerotron BG11 of integrated chip IC1A; The collecting electrode of aerotron BG11 connects the base stage of resistance R 15 and aerotron BG12 respectively; The base stage of aerotron BG12 connects resistance R 17, and the collecting electrode of aerotron BG12 connects resistance R 16, and resistance R 16 connects the base stage of aerotron BG13; The collecting electrode of aerotron BG13 connects resistance R 17 and relay J respectively, and resistance R 17 connects diode D1; Described short-circuit protection (1) connects described indicating device (2); Indicating device (2) is composed in parallel by several indicating circuits (5); Indicating circuit (5) comprises relay normally open contact J1-2; Relay normally open contact J1-2 connects read-out LED, and the relay normally open contact J1-2 other end inserts positive source VCC; Described indicating device (2) is connected with described warning device (3) through resistance R, and warning device (3) comprises into chip IC 2, and integrated chip IC2 connects K switch; K switch meets stabilivolt Dw respectively and is connected with resistance R, the other end ground connection VSS of stabilivolt Dw, the base stage of described integrated chip IC2 output termination capacitor C and aerotron BG; The collecting electrode of aerotron BG meets loud speaker B; The other end connecting resistance R of loud speaker B, aerotron BG grounded emitter VSS, described capacitor C other end ground connection.