CN2474415Y - Key board cipher antitheft device of motor vehicle - Google Patents

Abstract

The utility model relates to a keyboard style ciphered theft protection lock of automotive vehicle. The utility model comprises a vibration detecting circuit, an alarming acoustic circuit and a flashing alarming circuit. The utility model is characterized in that the theft protection lock further includes a keyboard cipher circuit, a digital display and an alarmed extinction circuit of an automotive vehicle. The input end of the keyboard cipher circuit is connected with the output end of the vibration detecting circuit. The output end of the keyboard cipher circuit is respectively connected with the digital display, the alarming acoustic circuit and the alarmed extinction circuit of an automotive vehicle and the input end of the flashing alarming circuit. The control end of the alarmed extinction circuit of an automotive vehicle is connected with the extinction wire of the automotive vehicle.

Description

Self-propelled vehicle keyboard-type cipher antitheft device

The utility model relates to a kind of motor vehicle antitheft device, particularly a kind of self-propelled vehicle keyboard-type cipher antitheft device.

Self-propelled vehicle in the market (motor bike, automobile) is for antitheft, anti-snatch, the general annunciator of forming by coding or rolling coding projector, receptor, vibration detection circuit, chimes of doom circuit, flash alarm circuit that adopts, only manage them and have easy to operate advantage, but its cost height, after if the robber utilizes decoding technique to obtain coding, be easy to operating motor vehicle and realize its purpose, work as the burglar in addition and rob the coded transmitter that Che Shiruo gets the car owner, easier car is stolen, made whole anti-joyride device as illusory.

The purpose of this utility model is to design a kind of low cost, simple to operation equally, but the stranger is difficult for realizing decoding that without coded transmitter, the stranger is difficult for opening self-propelled vehicle, safe and reliable self-propelled vehicle keyboard-type cipher antitheft device.

The purpose of this utility model is to realize like this, self-propelled vehicle keyboard-type cipher antitheft device, include vibration detection circuit, chimes of doom circuit, flash alarm circuit, a keyboard password circuit, nixie display and the alert flameout circuit of self-propelled vehicle chance have been characterized in, the input end of keyboard password circuit is connected with the mouth of vibration detection circuit, the mouth of keyboard password circuit is connected with the input end of nixie display, chimes of doom circuit, the alert flameout circuit of self-propelled vehicle chance, flash alarm circuit respectively, and self-propelled vehicle is met alert flameout circuit control end and the flame-out wire joint of self-propelled vehicle.

By the self-propelled vehicle keyboard-type cipher antitheft device that the utility model provides, cost is low, simple to operation, does not have coded transmitter, and the stranger is difficult for decoding, is difficult for starting vehicle, and anti-theft security is reliable.

Accompanying drawing of the present utility model is the schematic circuit diagram of self-propelled vehicle keyboard-type cipher antitheft device.

With reference to the accompanying drawings to the explanation furtherly of the utility model do, as shown in drawings, self-propelled vehicle keyboard-type cipher antitheft device, include vibration detection circuit, the chimes of doom circuit, flash alarm circuit, a keyboard password circuit is arranged, nixie display and self-propelled vehicle are met alert flameout circuit, the input end of keyboard password circuit is connected with the mouth of vibration detection circuit, the mouth of keyboard password circuit respectively with nixie display, the chimes of doom circuit, self-propelled vehicle is met alert flameout circuit, the input end of flash alarm circuit connects, and self-propelled vehicle is met alert flameout circuit control end and the flame-out wire joint of self-propelled vehicle.

The keyboard password circuit is by 12 bit keyboard JP, micro controller system IC1, resistance R 5-R8 forms, resistance R 5-R8's and connect end and be connected with+5V power supply, the other end is respectively with 3,7, the # key, 2,6, * key, 1,5,9 keys, 0,4,8 keys connect with the IO interface 16-22 pin formation keyboard of micro controller system IC1 sweeps the dish circuit, 23 pin of the input end IC1 of keyboard password circuit are connected with mouth 7 pin of the op amp IC2-2 of vibration detection circuit, the 5-11 pin of mouth IC1 is connected with the input pickup resistance R17-R11 of nixie display respectively, 13 pin of mouth IC1 are connected with the input pickup resistance R18 of chimes of doom circuit, 14 pin of mouth IC1 are connected with the input pickup resistance R21 that self-propelled vehicle is met alert flameout circuit, and 15 pin of mouth IC1 are connected with the input pickup resistance R19 of flash alarm circuit.0-9 is a numerical key, and * is that clearing key, # are acknowledgement key.Password is made up of the 0-9 numeral, and the figure place of password can be provided with the 3-12 figure place according to user's needs, and the correct input of palpus Old Password is pressed the # key again and confirmed before the input new password, otherwise delayed alarm.When closing the electric lock of self-propelled vehicle, promptly enter anti-theft state by * key self-propelled vehicle.When driving states, rob the car status alert by the # key for entering if meet the police.

Nixie display is made up of resistance R 17-R11, seven sections LED charactrons, and input end R17-R11 is connected with the 5-11 pin of keyboard password circuit output end micro controller system IC1 respectively.In the input cryptographic processes, light-emitting diode display will show " one " when pressing numerical key at ordinary times, in case divulge a secret, only when revising password input new password, light-emitting diode display shows that just institute is by numeral.

Self-propelled vehicle is met alert flameout circuit and is made up of aerotron T4, diode D3, resistance R 21, relay J 2, input pickup resistance R21 is connected with 14 pin of the mouth micro controller system IC1 of keyboard password circuit, the normal opened contact one end ground connection of J2, when the other end is closed with the self-propelled vehicle wire joint that stops working.The blanket of relay J 2 controlling machine motor-cars is in anti-theft state when meeting the police, relay J 2 adhesives are connected the flame-out line of self-propelled vehicle over the ground, and self-propelled vehicle can not start.

Vibration detection circuit is made up of op amp IC2-1, IC2-2, resistance R 3, R4, capacitor C 3, buzzer phone YD1,7 pin of mouth IC2-2 are connected with input end 23 pin of micro controller system IC1 in the keyboard password circuit, when self-propelled vehicle was subjected to vibration, its output signal made the chimes of doom circuit of Car Burglar Alarm and flash alarm circuit send chimes of doom and flashing light alarm by micro controller system IC1.

The chimes of doom circuit is made up of alert acoustic generator IC3, aerotron T2, T5, T6, zener diode DW2, resistance R 18, R20, R22, capacitor C 6, voltage transformer B, buzzer phone YD2, and input end R18 is connected with mouth 13 pin of micro controller system IC1 in the keyboard password circuit.When meeting the police, send chimes of doom by IC1 control.

Flash alarm circuit is made up of aerotron T3, diode D2, D4, D5, resistance R 19, relay J 1, and input end R19 is connected with mouth 15 pin of micro controller system IC1 in the keyboard pipe decoding circuit.Meet IC1 control J1 adhesive when alert, make the warning of flashing of left and right Cornering Lamp by D4, D5.

Claims (4)

1. self-propelled vehicle keyboard-type cipher antitheft device, include vibration detection circuit, chimes of doom circuit, flash alarm circuit, it is characterized in that having a keyboard password circuit, nixie display and self-propelled vehicle to meet alert flameout circuit, the input end of keyboard password circuit is connected with the mouth of vibration detection circuit, the mouth of keyboard password circuit is connected with the input end of nixie display, chimes of doom circuit, the alert flameout circuit of self-propelled vehicle chance, flash alarm circuit respectively, and self-propelled vehicle is met alert flameout circuit control end and the flame-out wire joint of self-propelled vehicle.

2. by the described self-propelled vehicle keyboard-type of claim 1 cipher antitheft device, it is characterized in that set keyboard password circuit is by 12 bit keyboard JP, micro controller system IC1, resistance R 5-R8 forms, resistance R 5-R8's and connect end and be connected with+5V power supply, the other end is respectively with 3,7, the # key, 2,6, * key, 1,5,9 keys, 0,4,8 keys connect with the IO interface 16-22 pin formation keyboard of micro controller system IC1 sweeps the dish circuit, 23 pin of the input end IC1 of keyboard password circuit are connected with mouth 7 pin of the op amp IC2-2 of vibration detection circuit, the 5-11 pin of mouth IC1 is connected with the input pickup resistance R17-R11 of nixie display respectively, 13 pin of mouth IC1 are connected with the input pickup resistance R18 of chimes of doom circuit, 14 pin of mouth IC1 are connected with the input pickup resistance R21 that self-propelled vehicle is met alert flameout circuit, and 15 pin of mouth IC1 are connected with the input pickup resistance R19 of flash alarm circuit.

3. by the described self-propelled vehicle keyboard-type of claim 1 cipher antitheft device, it is characterized in that said nixie display is made up of resistance R 17-R11, seven sections LED charactrons, input end R17-R11 is connected with the 5-11 pin of keyboard password circuit output end micro controller system IC1 respectively.

4. by the described self-propelled vehicle keyboard-type of claim 1 cipher antitheft device, it is characterized in that said self-propelled vehicle meets alert flameout circuit and be made up of aerotron T4, diode D3, resistance R 21, relay J 2, input pickup resistance R21 is connected with 14 pin of the mouth micro controller system IC1 of keyboard password circuit, the normal opened contact one end ground connection of J2, when the other end is closed with the self-propelled vehicle wire joint that stops working.

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