CN1070374A

CN1070374A - The apparatus for protecting power supply of remote control of motor vehicle siren horn

Info

Publication number: CN1070374A
Application number: CN91108676A
Authority: CN
Inventors: 廖胜昌
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-09-07
Filing date: 1991-09-07
Publication date: 1993-03-31

Abstract

A kind of apparatus for protecting power supply of remote control of motor vehicle siren horn comprises: current-limiting circuit, relay and timekeeping circuit; When the power supply of input current-limiting circuit had unusual big electric current to produce, current-limiting circuit can make the connecting point position of relay change, and big electric current can't be imported in the remote control siren horn, reaches the purpose of power protection; A period of time behind the relay tip position change, timekeeping circuit can move and allow the relay tip position reply.

Description

The apparatus for protecting power supply of remote control of motor vehicle siren horn

The present invention is a kind of apparatus for protecting power supply, particularly a kind of apparatus for protecting power supply of remote control of motor vehicle siren horn.

Recently the self-propelled vehicle that is made for the short distance traffic instrument has more and more welcome trend, no matter is that student or working personage have the more and more of self-propelled vehicle, and along with the increase of compatriots' vehicle possess amount, relatively the self-propelled vehicle loss by theft rate also improves gradually.In order to prevent that effectively self-propelled vehicle from being stolen; personage's exploitation of being engaged in this respect research provides multi-form anti-theft appliance; and to install the remote control of motor vehicle siren horn on self-propelled vehicle additional be that the person that is subjected to the motor vehicle driving most welcomes also is the mode that self-propelled vehicle is stolen that can prevent effectively; because the remote control of motor vehicle siren horn is except possessing the most basic anti-theft feature; usually also comprise automatic startup engine; seek car; multiple functions such as emergency; so self-propelled vehicle can prevent effectively that not only self-propelled vehicle from being stolen after installing the remote control siren horn additional, but the simultaneously more multi-functional design of mat and the cooresponding facility of person that brings the motor vehicle driving.

Shown in Figure 1 is the circuit structure diagram of block of remote control of motor vehicle annunciator in the past, remote control of motor vehicle siren horn in the past includes unit such as encode circuit 11, transmission circuit 12, acceptor circuit 13, amplifying circuit 14, decoding circuit 15, control circuit 16 and driving circuit 17, acceptor circuit 13, amplifying circuit 14, decoding circuit 15, control circuit 16 and driving circuit 17 are installed on the self-propelled vehicle, encode circuit 11, transmission circuit 12 be the composition remote controller then, and the person carries by motor vehicle driving; When the motor vehicle driving person pushes button on the remote controller of being made up of transmission circuit 12 and encode circuit 11, transmission circuit 12 will be sent the signal through coding, after acceptor circuit 13 receives this signal and deliver to amplifying circuit 14 amplifications, deliver to decoding circuit 15 decodings, if correct signal, the output of decoding circuit 15 can make control circuit 16 actions, and then make driving circuit 17 action, or allowing loudspeaker ring has entered theft-proof state or has made self-propelled vehicle can't start to reach theft-proof effect the ignition wire ground connection of self-propelled vehicle with the expression self-propelled vehicle.

Use remote control of motor vehicle siren horn in the past can be brought into play the anti-theft effect of expection really, when but the self-propelled vehicle producer installs the remote control siren horn on self-propelled vehicle, usually because expertise is not enough, and cause line short with junction of electric circuits connection error or because of operation carelessness, make the remote control siren horn form big electric current in use, and the wire fuse in the power sources of motor vehicle circuit is burnt, and the motor vehicle driving person in use because of do not note or careless hand simultaneously by the auto-start button of motor vehicle starting button and remote controller, can form big electric current equally and the wire fuse in the power sources of motor vehicle circuit is burnt, if just wire fuse is burnt so self-propelled vehicle can't restart.See also the structural representation of the circuit of motor vehicle starting in the past shown in Figure 2, include storage battery 21 in the start-up circuit, wire fuse 22, preceding (back) BK Brake Switch 23, stoplight stop lamp 24, starting cutout relay 25, members such as starting switch 26 and starter motor 27, if self-propelled vehicle adds the remote control siren horn and bridges the position as shown by arrows, when careless and auto-start button started by press switch 26 and remote control siren horn simultaneously of driver, start-up circuit will be from storage battery 21, wire fuse 22, alarm remote controller and starting switch 26 form the loop, power supply (about 12V) the moment ground that makes storage battery 21 be provided forms big electric current wire fuse 22 is burnt, wire fuse 22 1 is burnt, and start-up circuit can't be restarted (be manual started by press switch 26 or utilize the auto-start button of remote controller all can't make motor vehicle starting).

Main purpose of the present invention is to provide a kind of apparatus for protecting power supply of remote control of motor vehicle siren horn; make self-propelled vehicle after installing the remote control siren horn additional; even the situation of vicious action or circuit wiring error and when producing big electric current; apparatus for protecting power supply is automatic switch off at once also, to avoid burning wire fuse.

The apparatus for protecting power supply of remote control of motor vehicle siren horn of the present invention comprises current-limiting circuit and relay, and described current-limiting circuit is made up of current-limiting resistance, current limliting diode, the first transistor and the second brilliant pipe; Described relay is provided with normal opened contact and normally closed contact, one end of described current-limiting resistance is connected with power input with the collecting electrode parallel connection of described the first transistor again, the other end of described current-limiting resistance is connected with the negative pole of current limliting diode and the normally closed contact of relay, and be connected with the power input of remote control siren horn again, the positive pole of described current limliting diode is connected with the base stage of described the first transistor, and the collecting electrode of described transistor seconds is connected with the normal opened contact of described relay.

Also include timekeeping circuit in the apparatus for protecting power supply of described remote control of motor vehicle siren horn; described timekeeping circuit is made up of time meter, the 3rd transistor and the 4th transistor; the described the 3rd transistorized base stage is connected with the mouth of described time meter; described the 3rd transistor and described the 4th transistor constitute the serial connection amplification stage, and the described the 4th transistorized collecting electrode is connected with the base stage of described transistor seconds.

Describe in detail below in conjunction with accompanying drawing and preferred embodiment.

Fig. 1 is the circuit structure diagram of block of existing remote control of motor vehicle siren horn.

Fig. 2 is the structural representation of existing motor vehicle starting circuit.

Fig. 3 is the transmission circuit and the encode circuit figure of remote control of motor vehicle siren horn of the present invention.

Fig. 4 is reception, amplification, decoding, control and the driving circuit figure of remote control of motor vehicle siren horn of the present invention.

Fig. 5 is the circuit diagram of the apparatus for protecting power supply of remote control of motor vehicle siren horn of the present invention.

See also the transmission circuit and the encode circuit of remote control of motor vehicle siren horn of the present invention shown in Figure 3, and remote control of motor vehicle siren horn of the present invention shown in Figure 4 receives, amplify, decoding, control and driving circuit figure, the structure diagram of block of Fig. 3 and Fig. 4 is same as shown in Figure 1, when self-propelled vehicle is equipped with the remote control siren horn, when if the motor vehicle driving person pushes the button 8 of the remote controller of being made up of transmission circuit 32 and encode circuit 31, transmission circuit 32 will be sent through the signal of coding and give acceptor circuit 33, after acceptor circuit 33 receives this signal and deliver to 34 amplifications of discharge road, deliver to decoding circuit 35 decodings, if correct signal, the output of decoding circuit 35 just can make control circuit 36 actions, just the pin one 0 of the demoder among Fig. 4 351 can be sent active potential, make transistor 361 in the control circuit 36,362 conductings, and then make the relay 371 in the driving circuit 37 move, entered theft-proof state and allow loudspeaker 370 ring with the expression self-propelled vehicle, this moment is as long as self-propelled vehicle is moved by the people or have the people to attempt the starter motor motor-car, all will make vibroswitch 363 closures in the control circuit 36, and allow control circuit 36 move, even transistor 364,365 conductings, and then make the relay 371 in the driving circuit 37 drive loudspeaker 370 songs (loudspeaker song time length is by the charging duration decision of the capacitor C in the control circuit 36 1), and self-propelled vehicle can't be started the ignition wire of self-propelled vehicle (be 82 bonded assemblys of arrow partly) ground connection, to reach theft-proof effect.When the motor vehicle driving person pushed button 80 among Fig. 3, then the pin one 1 of the demoder in the decoding circuit 35 351 can be sent active potential among Fig. 4, and the pin one 0 of demoder then becomes high potential output, so anti-theft state is removed; During button 81 in pushing Fig. 3,, motor vehicle engine is started automatically as aforesaid operating principle; During button 83 in pushing Fig. 3, the vehicle directional lamp is shown and reach the effect of seeking car or make the self-propelled vehicle in travelling flame-out at once.

More be provided with apparatus for protecting power supply in the aforesaid remote control of motor vehicle siren horn, see also shown in Figure 5, it is the circuit diagram of apparatus for protecting power supply of the present invention, as shown in Figure 5, apparatus for protecting power supply 4 is made up of current-limiting circuit 41, relay 42 and timekeeping circuit 43, current-limiting circuit 41 includes current-limiting resistance 411, current limliting diode 412, the first transistor 413 and transistor seconds 414, and timekeeping circuit 43 is made up of time meter 431, the 3rd transistor 432 and the 4th transistor 433; When the power supply of remote control of motor vehicle siren horn is supplied as normal condition, relay 42 is a normally closed contact, after the power supply+V that makes the self-propelled vehicle storage battery be provided is imported by input end, through the normally closed contact of current-limiting resistance 411 and relay 42, the power input with the remote control of motor vehicle siren horn is connected (point of 84 among Fig. 4) more earlier; Push the auto-start button of motor vehicle starting button and remote controller because of carelessness simultaneously as the motor vehicle driving person, or the circuit attaching mistake of remote control siren horn, so that when producing the input of big electric current, big electric current at first can cause big loss in voltage on current-limiting resistance 411, make 412 conductings of current limliting diode, and allow the first transistor 413 conductings, conducting along with the first transistor 413, relay 42 will change the contact state and become normal opened contact by normally closed contact, make the big electric current of input diverted via the loop that is constituted by transistor seconds 414 and relay 42 and flow to ground connection, and can't further import in the remote control siren horn, please look back shown in Figure 2, when electric current can't flow into the remote control siren horn, certainly wire fuse is burnt, and reach the purpose of protective circuit; After about two seconds; time meter 431 in the timekeeping circuit 43 will be sent signal and make the 3rd; the 4th transistor 432; 433 conductings; received current will bypass via the 4th transistor 433; and the loop of no longer flowing through and being constituted by transistor seconds 414 and relay 42; make the contact state of relay 42 change; just being replied by normally open is normally off; if at this moment importing the size of power supply has replied normally; electric current will be via current-limiting resistance 411 so; the normally closed contact input remote control siren horn of relay 42; if it is normal that the input power supply is not also replied; when being current state; the contact state of relay 42 will change again; so big electric current can't flow in the remote control siren horn; similarly; after 2 seconds; timekeeping circuit 43 can make the contact replying state of relay 42; as long as it is normal that the input power supply is not replied; relay 42 in this device will change the contact state again; make power supply to import; at this moment the power frame person of sailing or the self-propelled vehicle producer can learn that the circuit of remote control siren horn is connected with mistake or vehicle operation mode mistake from the state that the contact of relay 42 is constantly beated; but the wire fuse in the motor vehicle starting circuit (as shown in Figure 2) is unlikely and is burnt, so can reach the purpose of protective circuit.

Comprehensive the above as can be known, apparatus for protecting power supply of the present invention can prevent self-propelled vehicle effectively because of the improper and issuable big electric current of the assembling of remote control siren horn, makes the wire fuse of interior of motor vehicles power circuit be unlikely because of the generation of big electric current and is burnt.

Claims

1, a kind of apparatus for protecting power supply of remote control of motor vehicle siren horn comprises current-limiting circuit and relay, it is characterized in that: described current-limiting circuit is made up of current-limiting resistance, current limliting diode, the first transistor and the second brilliant pipe; Described relay is provided with normal opened contact and normally closed contact, one end of described current-limiting resistance is connected with power input with the collecting electrode parallel connection of described the first transistor again, the other end of described current-limiting resistance is connected with the negative pole of current limliting diode and the normally closed contact of relay, and be connected with the power input of remote control siren horn again, the positive pole of described current limliting diode is connected with the base stage of described the first transistor, and the collecting electrode of described transistor seconds is connected with the normal opened contact of described relay.

2, the apparatus for protecting power supply of remote control of motor vehicle siren horn as claimed in claim 1; it is characterized in that: also include timekeeping circuit in the apparatus for protecting power supply of described remote control of motor vehicle siren horn; described timekeeping circuit is made up of time meter, the 3rd transistor and the 4th transistor; the described the 3rd transistorized base stage is connected with the mouth of described time meter; described the 3rd transistor and described the 4th transistor constitute the serial connection amplification stage, and the described the 4th transistorized collecting electrode is connected with the base stage of described transistor seconds.